NCPC26 fixing folder and file placments

README.md

@@ -1,3 +1,7 @@
-# NCPC26 final practive
+# NCPC26!!
 
-This branch contaisn the code from the final practice(18th september 2026) for NCPC26!
+This branch contains the code for NCPC 2026
+here we have 3 folder containing all problems
+- py: The python code
+- java: The java code
+- c: The c

c/C.c

@@ -0,0 +1,77 @@
+#include <stdio.h>
+#include <math.h>
+
+int main()
+{
+    int ship_x, ship_y;
+    int treasure_x, treasure_y;
+    int direction_x, direction_y;
+    int movement_help;
+
+    scanf("%d %d", &ship_x, &ship_y);
+    scanf("%d %d", &treasure_x, &treasure_y);
+
+    
+
+    while (((ship_x == treasure_x) && (ship_y == treasure_y))==0){
+        direction_x = ship_x - treasure_x;
+        direction_y = ship_y - treasure_y;
+
+        //diagonal movement
+        if (abs(direction_x) == abs(direction_y)){
+            //NortEeast movment
+            if((direction_x < 0) && (direction_y < 0)){
+                printf("NE\n");
+                ship_x -= direction_x;
+                ship_y -= direction_y;
+            }
+            //NortWest movement
+            else if((direction_x > 0) && (direction_y < 0)){
+                printf("NW\n");
+                ship_x -= direction_x;
+                ship_y -= direction_y;
+            }
+            //SouthWest movement
+            else if((direction_x > 0) && (direction_y > 0)){
+                printf("SW\n");
+                ship_x -= direction_x;
+                ship_y -= direction_y;
+            }
+            //SouthEast movement
+            else if((direction_x < 0) && (direction_y > 0)){
+                printf("SE\n");
+                ship_x -= direction_x;
+                ship_y -= direction_y;
+            }
+        }
+        else if((abs(direction_x) != abs(direction_y))){
+            //horisontal / vertical movement
+            if(abs(direction_x) > abs(direction_y)){
+                movement_help = abs(abs(direction_x) - abs(direction_y));
+                //East movement
+                if(direction_x < 0){
+                    printf("E\n");
+                    ship_x += movement_help;
+                }
+                //West movement
+                if(direction_x > 0){
+                    printf("W\n");
+                    ship_x -= movement_help;
+                }
+            }
+            if(abs(direction_x) < abs(direction_y)){
+                movement_help = abs( abs(direction_y) - abs(direction_x));
+                //North Movement
+                if(direction_y < 0){
+                    printf("N\n");
+                    ship_y += movement_help;
+                }
+                //South Movement
+                if(direction_y > 0){
+                    printf("S\n");
+                    ship_y -= movement_help;
+                }
+            }
+        }
+    }
+}

java/.idea/.gitignore

@@ -3,8 +3,6 @@
 /workspace.xml
 # Editor-based HTTP Client requests
 /httpRequests/
-# Ignored default folder with query files
-/queries/
 # Datasource local storage ignored files
 /dataSources/
 /dataSources.local.xml

java/.idea/gradle.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

java/.idea/misc.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="FrameworkDetectionExcludesConfiguration">
+    <file type="web" url="file://$PROJECT_DIR$" />
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

java/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

java/NCPC26-practive-final/settings.gradle

@@ -1 +0,0 @@
-rootProject.name = 'NCPC26-practive-final'

java/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'java'
 }
 
-group = 'com.kattis.ncpc26.pf'
+group = 'org.example'
 version = '1.0-SNAPSHOT'
 
 repositories {
@@ -10,7 +10,7 @@ repositories {
 }
 
 dependencies {
-    testImplementation platform('org.junit:junit-bom:6.0.0')
+    testImplementation platform('org.junit:junit-bom:5.10.0')
     testImplementation 'org.junit.jupiter:junit-jupiter'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }

java/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Sep 18 10:45:37 CEST 2026
+#Sat Oct 03 11:00:43 CEST 2026
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

java/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'java'

java/src/main/java/B.java

@@ -0,0 +1,31 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+
+public class B {
+    record Pair<K, V>(K key, V value)
+    {}
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        String input = br.readLine();
+        int n = Integer.parseInt(input.split(" ")[0]);
+        int k = Integer.parseInt(input.split(" ")[1]);
+        int[] slots = new int[k];
+        HashMap<String>
+        for(int i = 0; i < n; i++)
+        {
+            input = br.readLine();
+            int org = Integer.parseInt(input.split(" ")[0])-1;
+            int dest = Integer.parseInt(input.split(" ")[1])-1;
+            slots[org]--;
+            slots[dest]++;
+        }
+
+        long redudent = Arrays.stream(slots).filter((i) -> i == 0).count();
+
+        System.out.println(redudent);
+    }
+}

java/src/main/java/D.java

@@ -0,0 +1,52 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+public class D {
+    public static void main(String[] args) throws Exception {
+
+        String spondee  = "--";
+        String trocha   = "-u";
+        String dactyl   = "-uu";
+
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        String in = br.readLine();
+
+        int spondees = 0;
+        int dactyls = 0;
+
+        for(int i = 0; i < 5; i++)
+        {
+            if(in.startsWith(spondee))
+            {
+                spondees++;
+                in = in.substring(spondee.length());
+            }
+            else if(in.startsWith(dactyl))
+            {
+                dactyls++;
+                in = in.substring(dactyl.length());
+            }
+            else
+            {
+                System.out.println("no");
+                return;
+            }
+        }
+        if(!(spondees + dactyls == 5))
+        {
+            System.out.println("no");
+            return;
+        }
+        if(in.length() > 2)
+        {
+            System.out.println("no");
+            return;
+        }
+        if(!(in.endsWith(spondee) || in.endsWith(trocha)))
+        {
+            System.out.println("no");
+            return;
+        }
+        System.out.println("yes");
+    }
+}

java/src/main/java/E.java

@@ -0,0 +1,181 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class E {
+    public static void main(String[] args) throws Exception {
+
+        char[][] nums = {
+            // 0
+            {
+                '.', '#', '#', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '.', '.', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.'
+            },
+            // 1
+            {
+                '.', '.', '.', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '.', '.', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '.', '.', '.'
+            },
+            // 2
+            {
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '#', '#', '.',
+                '#', '.', '.', '.',
+                '#', '.', '.', '.',
+                '.', '#', '#', '.'
+            },
+            // 3
+            {
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '#', '#', '.'
+            },
+            // 4
+            {
+                '.', '.', '.', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '.', '.', '.'
+            },
+            // 5
+            {
+                '.', '#', '#', '.',
+                '#', '.', '.', '.',
+                '#', '.', '.', '.',
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '#', '#', '.'
+            },
+            // 6
+            {
+                '.', '#', '#', '.',
+                '#', '.', '.', '.',
+                '#', '.', '.', '.',
+                '.', '#', '#', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.'
+            },
+            // 7
+            {
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '.', '.', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '.', '.', '.'
+            },
+            // 8
+            {
+                '.', '#', '#', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.'
+            },
+            // 9
+            {
+                '.', '#', '#', '.',
+                '#', '.', '.', '#',
+                '#', '.', '.', '#',
+                '.', '#', '#', '.',
+                '.', '.', '.', '#',
+                '.', '.', '.', '#',
+                '.', '#', '#', '.'
+            }
+        };
+
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        StringBuilder sb = new StringBuilder();
+        for(int i = 0; i < 7; i++)
+        {
+            sb.append(br.readLine());
+        }
+
+        char[] input = sb.toString().toCharArray();
+
+        ArrayList<Integer> posibleNums = new ArrayList<>();
+
+        for(int i = 0; i < 10; i++)
+        {
+            if(Arrays.equals(nums[i], input))
+            {
+                posibleNums.add(i);
+            }
+        }
+
+        if(!posibleNums.isEmpty())
+        {
+            System.out.println(posibleNums.get(0));
+            return;
+        }
+
+        for(int i = 10; i < 100; i++)
+        {
+            char[] compiledNum = compileNum(nums, i);
+            if(Arrays.equals(compiledNum, input))
+            {
+                posibleNums.add(i);
+            }
+        }
+
+        if(posibleNums.isEmpty())
+        {
+            System.out.println("impossible");
+            return;
+        }
+
+        posibleNums.sort(Integer::compareTo);
+
+        sb = new StringBuilder();
+
+        StringBuilder finalSb = sb;
+        posibleNums.forEach((i) -> {
+            finalSb.append(i).append(" ");
+        });
+        String output = sb.toString().trim();
+        System.out.println(output);
+
+    }
+
+
+    private static char[] compileNum(char[][] nums, int i)
+    {
+        int tio = i / 10;
+        int ett = i % 10;
+
+        char[] out = new char[28];
+
+        for(int j = 0; j < 28; j++)
+        {
+            out[j] = nums[tio][j] == nums[ett][j] ? '.' : '#';
+        }
+
+        return out;
+    }
+}

java/src/main/java/I.java

@@ -0,0 +1,34 @@
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
+public class I {
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        String crewStr = br.readLine();
+        String hermit1Str = br.readLine();
+        String hermit2Str = br.readLine();
+        String hermit3Str = br.readLine();
+        int crew = Integer.parseInt(crewStr);
+        int hermit1 = Integer.parseInt(hermit1Str);
+        int hermit2 = Integer.parseInt(hermit2Str);
+        int hermit3 = Integer.parseInt(hermit3Str);
+
+        ArrayList<Integer> hermits = new ArrayList<>();
+        hermits.add(hermit1);
+        hermits.add(hermit2);
+        hermits.add(hermit3);
+
+        hermits.sort(Integer::compareTo);
+
+        if(hermits.get(0) + crew >= hermits.get(1))
+        {
+            System.out.println("impossible");
+        }
+        else
+        {
+            System.out.println(hermits.get(0) + crew);
+        }
+    }
+}

java/src/main/java/K.java

@@ -0,0 +1,25 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
+public class K {
+
+    static record Pair<K, V>(K key, V value)
+    {}
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int numTrees = Integer.parseInt(br.readLine());
+        ArrayList<Pair<Integer, Integer>> trees = new ArrayList<>();
+        for(int i = 0; i < numTrees; i++)
+        {
+            String str = br.readLine();
+            int i1 = Integer.parseInt(str.split(" ")[0]);
+            int i2 = Integer.parseInt(str.split(" ")[1]);
+            trees.add(new Pair<>(i1, i2));
+        }
+
+
+    }
+}

py/L.py

@@ -0,0 +1,38 @@
+import sys
+
+for line in sys.stdin:
+    pices = int(line)
+
+    if (pices == 0):
+        print(0)
+        exit()
+
+    arr = list()
+    arr = map(int, input().split())
+
+    ar = sorted(arr)
+
+    half = ar[pices-1] / 2
+
+    i = 0
+    index = 0
+    closest = 1001
+
+    if (pices == 1):
+        print(ar[0])
+        exit()
+
+    while ar[i] <= half:
+        i += 1
+
+    if i > 0:
+        if (ar[i] - half) <= closest:
+            closest = (ar[i] - half)
+            index = i
+        if (half - ar[i-1]) <= closest:
+            closest = (ar[i-1] - half)
+            index = i-1
+    else:
+        index = 0
+
+    print(max((ar[pices-1] - ar[index]), ar[index]))

py/good.txt

@@ -0,0 +1,26 @@
+3
+400 199 201
+3
+400 202 199
+3
+400 201 198
+2
+500 100
+2
+101 99
+3
+100 100 100
+3
+100 200 300
+3
+1000 1 1
+3
+1000 500 100
+3
+100 101 99
+3
+100 150 50
+4
+200 400 200 100
+7
+100 100 900 500 500 1000 400

py/input.txt

@@ -0,0 +1,22 @@
+3
+401 600 1000
+3
+1 600 1000
+2
+1 2
+2
+1 1
+3
+1 1 2
+4
+1 2 1 1
+4
+1 2 2 1
+4
+1 2 2 2
+4
+400 1000 1000 1000
+5
+1000 1000 1000 998 22
+4
+300 500 150 100