結果

問題 No.938 賢人を探せ
ユーザー OlandOland
提出日時 2019-12-01 00:19:46
言語 Java21
(openjdk 21)
結果
AC  
実行時間 236 ms / 2,000 ms
コード長 6,911 bytes
コンパイル時間 2,698 ms
コンパイル使用メモリ 79,280 KB
実行使用メモリ 59,068 KB
最終ジャッジ日時 2024-12-14 11:40:52
合計ジャッジ時間 6,617 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge1
このコードへのチャレンジ
（要ログイン）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 236 ms
58,812 KB
testcase_01 AC 57 ms
50,160 KB
testcase_02 AC 55 ms
50,140 KB
testcase_03 AC 56 ms
50,460 KB
testcase_04 AC 56 ms
50,548 KB
testcase_05 AC 55 ms
50,468 KB
testcase_06 AC 57 ms
50,492 KB
testcase_07 AC 57 ms
50,156 KB
testcase_08 AC 161 ms
59,052 KB
testcase_09 AC 153 ms
58,808 KB
testcase_10 AC 58 ms
50,360 KB
testcase_11 AC 178 ms
58,772 KB
testcase_12 AC 171 ms
56,788 KB
testcase_13 AC 169 ms
56,744 KB
testcase_14 AC 169 ms
56,984 KB
testcase_15 AC 171 ms
56,756 KB
testcase_16 AC 161 ms
56,928 KB
testcase_17 AC 176 ms
56,776 KB
testcase_18 AC 172 ms
56,840 KB
testcase_19 AC 180 ms
57,032 KB
testcase_20 AC 168 ms
56,996 KB
testcase_21 AC 171 ms
56,808 KB
testcase_22 AC 195 ms
59,068 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

import java.io.*;
import java.util.*;

@SuppressWarnings("unused")
public class Main {
    FastScanner in;
    PrintWriter out;
    int MOD = (int)1e9+7;
    long ceil(long a, long b){return (a + b - 1) / b;}
    long gcd(long a, long b){return b == 0 ? a : gcd(b, a % b);}
    long lcm(long a, long b){return a / gcd(a, b) * b;}
    
    void solve(){
        int N = in.nextInt();
        String[][] AB = new String[N][2];
        HashSet<String> set = new HashSet<>();
        for(int i = 0; i < N; i++){
            AB[i][0] = in.nextStr();
            AB[i][1] = in.nextStr();
            set.add(AB[i][1]);
        }
        for(int i = 0; i < N; i++){
            set.remove(AB[i][0]);
        }
        for(int i = 0; i < N; i++){
            if(set.contains(AB[i][0])){
                out.println(AB[i][0]);
                set.remove(AB[i][0]);
            }
            if(set.contains(AB[i][1])){
                out.println(AB[i][1]);
                set.remove(AB[i][1]);
            }
        }
    }
    
    public static void main(String[] args) {
        new Main().m();
    }

    private void m() {
        in = new FastScanner(System.in);
        out = new PrintWriter(System.out);
        /*
        try {
            String path = "output.txt";
            out = new PrintWriter(new BufferedWriter(new FileWriter(new File(path))));
        }catch (IOException e){
            e.printStackTrace();
        }
        */
        solve();
        out.flush();
        in.close();
        out.close();
    }

    static class FastScanner {
        private Reader input;

        public FastScanner() {this(System.in);}
        public FastScanner(InputStream stream) {this.input = new BufferedReader(new InputStreamReader(stream));}
        public void close() {
            try {
                this.input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        public int nextInt() {return (int) nextLong();}

        public long nextLong() {
            try {
                int sign = 1;
                int b = input.read();
                while ((b < '0' || '9' < b) && b != '-' && b != '+') {
                    b = input.read();
                }
                if (b == '-') {
                    sign = -1;
                    b = input.read();
                } else if (b == '+') {
                    b = input.read();
                }
                long ret = b - '0';
                while (true) {
                    b = input.read();
                    if (b < '0' || '9' < b) return ret * sign;
                    ret *= 10;
                    ret += b - '0';
                }
            } catch (IOException e) {
                e.printStackTrace();
                return -1;
            }
        }

        public double nextDouble() {
            try {
                double sign = 1;
                int b = input.read();
                while ((b < '0' || '9' < b) && b != '-' && b != '+') {
                    b = input.read();
                }
                if (b == '-') {
                    sign = -1;
                    b = input.read();
                } else if (b == '+') {
                    b = input.read();
                }
                double ret = b - '0';
                while (true) {
                    b = input.read();
                    if (b < '0' || '9' < b) break;
                    ret *= 10;
                    ret += b - '0';
                }
                if (b != '.') return sign * ret;
                double div = 1;
                b = input.read();
                while ('0' <= b && b <= '9') {
                    ret *= 10;
                    ret += b - '0';
                    div *= 10;
                    b = input.read();
                }
                return sign * ret / div;
            } catch (IOException e) {
                e.printStackTrace();
                return Double.NaN;
            }
        }

        public char nextChar() {
            try {
                int b = input.read();
                while (Character.isWhitespace(b)) {
                    b = input.read();
                }
                return (char) b;
            } catch (IOException e) {
                e.printStackTrace();
                return 0;
            }
        }

        public String nextStr() {
            try {
                StringBuilder sb = new StringBuilder();
                int b = input.read();
                while (Character.isWhitespace(b)) {
                    b = input.read();
                }
                while (b != -1 && !Character.isWhitespace(b)) {
                    sb.append((char) b);
                    b = input.read();
                }
                return sb.toString();
            } catch (IOException e) {
                e.printStackTrace();
                return "";
            }
        }

        public String nextLine() {
            try {
                StringBuilder sb = new StringBuilder();
                int b = input.read();
                while (b != -1 && b != '\n') {
                    sb.append((char) b);
                    b = input.read();
                }
                return sb.toString();
            } catch (IOException e) {
                e.printStackTrace();
                return "";
            }
        }

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

        public int[] nextIntArrayDec(int n) {
            int[] res = new int[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextInt() - 1;
            }
            return res;
        }

        public int[] nextIntArray1Index(int n) {
            int[] res = new int[n + 1];
            for (int i = 0; i < n; i++) {
                res[i + 1] = nextInt();
            }
            return res;
        }

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

        public long[] nextLongArrayDec(int n) {
            long[] res = new long[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextLong() - 1;
            }
            return res;
        }

        public long[] nextLongArray1Index(int n) {
            long[] res = new long[n + 1];
            for (int i = 0; i < n; i++) {
                res[i + 1] = nextLong();
            }
            return res;
        }

        public double[] nextDoubleArray(int n) {
            double[] res = new double[n];
            for (int i = 0; i < n; i++) {
                res[i] = nextDouble();
            }
            return res;
        }
    }
}
0