Submission #3185842


Source Code Expand

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

    static int N;
    static int[] X, Y;

    public static void main(String[] args) {
        FastScanner sc = new FastScanner(System.in);
        N = sc.nextInt();
        X = new int[N];
        Y = new int[N];
        for (int i = 0; i < N; i++) {
            X[i] = sc.nextInt();
            Y[i] = sc.nextInt();
        }
        System.out.println(solve());
    }

    static int solve() {
        int cnt = 0;
        for (int i = 0; i < N-2; i++) {
            for (int j = i+1; j < N-1; j++) {
                for (int k = j+1; k < N; k++) {
                    if( calc(i, j, k) ) {
                        cnt++;
                    }
                }
            }
        }
        return cnt;
    }

    static boolean calc(int i, int j, int k) {
        long x1 = X[j] - X[i]; long y1 = Y[j] - Y[i];
        long x2 = X[k] - X[i]; long y2 = Y[k] - Y[i];
        long area = Math.abs(x1 * y2 - y1 * x2);
        return area > 0 && area % 2 == 0;
    }

    @SuppressWarnings("unused")
    static class FastScanner {
        private BufferedReader reader;
        private StringTokenizer tokenizer;

        FastScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
            tokenizer = null;
        }

        String next() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        String nextLine() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    return reader.readLine();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken("\n");
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        int[] nextIntArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++)
                a[i] = nextInt();
            return a;
        }

        long[] nextLongArray(int n) {
            long[] a = new long[n];
            for (int i = 0; i < n; i++)
                a[i] = nextLong();
            return a;
        }
    }
}

Submission Info

Submission Time
Task B - 格子点と整数
User kusomushi
Language Java8 (OpenJDK 1.8.0)
Score 100
Code Size 2772 Byte
Status AC
Exec Time 93 ms
Memory 24916 KB

Judge Result

Set Name All
Score / Max Score 100 / 100
Status
AC × 75
Set Name Test Cases
All case_01.txt, case_02.txt, case_03.txt, case_04.txt, case_05.txt, case_06.txt, case_07.txt, case_08.txt, case_09.txt, case_10.txt, case_11.txt, case_12.txt, case_13.txt, case_14.txt, case_15.txt, case_16.txt, case_17.txt, case_18.txt, case_19.txt, case_20.txt, case_21.txt, case_22.txt, case_23.txt, case_24.txt, case_25.txt, case_26.txt, case_27.txt, case_28.txt, case_29.txt, case_30.txt, case_31.txt, case_32.txt, case_33.txt, case_34.txt, case_35.txt, case_36.txt, case_37.txt, case_38.txt, case_39.txt, case_40.txt, case_41.txt, case_42.txt, case_43.txt, case_44.txt, case_45.txt, case_46.txt, case_47.txt, case_48.txt, case_49.txt, case_50.txt, case_51.txt, case_52.txt, case_53.txt, case_54.txt, case_55.txt, case_56.txt, case_57.txt, case_58.txt, case_59.txt, case_60.txt, case_61.txt, case_62.txt, case_63.txt, case_64.txt, case_65.txt, case_66.txt, case_67.txt, case_68.txt, case_69.txt, case_70.txt, case_71.txt, sample_1.txt, sample_2.txt, sample_3.txt, sample_4.txt
Case Name Status Exec Time Memory
case_01.txt AC 77 ms 19668 KB
case_02.txt AC 81 ms 22356 KB
case_03.txt AC 84 ms 20948 KB
case_04.txt AC 71 ms 21076 KB
case_05.txt AC 72 ms 20692 KB
case_06.txt AC 88 ms 18132 KB
case_07.txt AC 72 ms 20436 KB
case_08.txt AC 70 ms 20692 KB
case_09.txt AC 92 ms 20436 KB
case_10.txt AC 85 ms 19668 KB
case_11.txt AC 81 ms 20308 KB
case_12.txt AC 77 ms 21328 KB
case_13.txt AC 90 ms 20564 KB
case_14.txt AC 78 ms 20564 KB
case_15.txt AC 89 ms 17492 KB
case_16.txt AC 79 ms 21204 KB
case_17.txt AC 70 ms 19540 KB
case_18.txt AC 79 ms 20564 KB
case_19.txt AC 71 ms 21460 KB
case_20.txt AC 73 ms 22740 KB
case_21.txt AC 91 ms 21460 KB
case_22.txt AC 75 ms 20692 KB
case_23.txt AC 83 ms 24660 KB
case_24.txt AC 82 ms 19668 KB
case_25.txt AC 86 ms 18516 KB
case_26.txt AC 71 ms 19796 KB
case_27.txt AC 92 ms 21076 KB
case_28.txt AC 80 ms 18644 KB
case_29.txt AC 89 ms 17620 KB
case_30.txt AC 77 ms 20820 KB
case_31.txt AC 70 ms 20564 KB
case_32.txt AC 77 ms 19796 KB
case_33.txt AC 89 ms 17620 KB
case_34.txt AC 77 ms 19668 KB
case_35.txt AC 72 ms 18772 KB
case_36.txt AC 80 ms 19028 KB
case_37.txt AC 70 ms 21716 KB
case_38.txt AC 75 ms 19796 KB
case_39.txt AC 76 ms 19412 KB
case_40.txt AC 78 ms 20820 KB
case_41.txt AC 80 ms 21204 KB
case_42.txt AC 88 ms 21460 KB
case_43.txt AC 82 ms 19668 KB
case_44.txt AC 72 ms 18260 KB
case_45.txt AC 79 ms 19284 KB
case_46.txt AC 78 ms 18900 KB
case_47.txt AC 83 ms 22612 KB
case_48.txt AC 83 ms 20820 KB
case_49.txt AC 81 ms 18644 KB
case_50.txt AC 89 ms 18388 KB
case_51.txt AC 89 ms 21460 KB
case_52.txt AC 79 ms 18644 KB
case_53.txt AC 80 ms 24916 KB
case_54.txt AC 92 ms 20308 KB
case_55.txt AC 90 ms 21204 KB
case_56.txt AC 90 ms 19796 KB
case_57.txt AC 92 ms 21204 KB
case_58.txt AC 82 ms 19540 KB
case_59.txt AC 92 ms 21460 KB
case_60.txt AC 90 ms 20052 KB
case_61.txt AC 90 ms 24916 KB
case_62.txt AC 92 ms 19924 KB
case_63.txt AC 92 ms 20436 KB
case_64.txt AC 79 ms 20436 KB
case_65.txt AC 92 ms 18132 KB
case_66.txt AC 90 ms 20692 KB
case_67.txt AC 92 ms 20948 KB
case_68.txt AC 92 ms 20564 KB
case_69.txt AC 92 ms 24916 KB
case_70.txt AC 93 ms 20948 KB
case_71.txt AC 83 ms 19796 KB
sample_1.txt AC 68 ms 18900 KB
sample_2.txt AC 70 ms 20308 KB
sample_3.txt AC 69 ms 19412 KB
sample_4.txt AC 68 ms 19284 KB