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답안 #72291

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
72291 2018-08-26T06:51:43 Z cat > /dev/null(#2231, lobo_prix, jms100300, enochjung) 마법 다우징 (FXCUP3_magic) C++17
0 / 100
 2 ms 256 KB 
#include "dowsing.h"
#include<set>
#include<ctime>
#include<cstdio>
#include<cstdlib>
using namespace std;

void FindTreasure(int N) {
    srand(time(NULL));
    set<int> rest, rest2;

    for (int i = 1; i <= N; i ++)
        rest.insert(i), rest2.insert(i);

    int row, col;

    while (true) {
        int ra = ((long long)rand() * rand()) % rest.size();

        int val; 
        for (int item : rest) {
            val = item;
            if (!ra)
                break;
            ra--;
        }

        if (Detect(1, val)) {
            col = val;
            break;
        }

        rest.erase(val);
    }


    while (true) {
        int ra = ((long long)rand() * rand()) % rest2.size();

        int val; 
        for (int item : rest2) {
            val = item;
            if (!ra)
                break;
            ra--;
        }

        if (Detect(val,1)) {
            row = val;
            break;
        }

        rest2.erase(val);
    }

    Report(row, col);
}

Subtask #1
0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 256 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -