Submission #2710326


Source Code Expand

#include <cstdio>
#include <cstring>
#include <string>
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
using namespace std;
typedef long long int ll;

int main()
{
	int n, m;
  scanf("%d %d", &n, &m);
  vector<int> v[16];
  for(int i=0; i<m; i++){
    int x, y;
    scanf("%d %d", &x, &y);
    x--; y--;
    v[x].push_back(y);
  }
  ll dp[1<<16]={};
  dp[0]=1;
  for(int k=1; k<(1<<n); k++){
    for(int i=0; i<n; i++){
      if(((k>>i)&1)==0) continue;
      bool e=0;
      for(int j=0; j<v[i].size(); j++){
        int y=v[i][j];
        if(((k>>y)&1)==1){
          e=1;
          break;
        }
      }
      if(e==0) dp[k]+=dp[k&(~(1<<i))];
    }
  }
  printf("%lld\n", dp[(1<<n)-1]);
	return 0;
}

Submission Info

Submission Time
Task D - 徒競走
User chocorusk
Language C++14 (GCC 5.4.1)
Score 100
Code Size 824 Byte
Status AC
Exec Time 7 ms
Memory 768 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &n, &m);
                         ^
./Main.cpp:21:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &x, &y);
                           ^

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 30 / 30 70 / 70
Status
AC × 3
AC × 15
AC × 32
Set Name Test Cases
Sample 0_00.txt, 0_01.txt, 0_02.txt
Subtask1 0_00.txt, 0_01.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt
All 0_00.txt, 0_01.txt, 0_02.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 2_00.txt, 2_01.txt, 2_02.txt, 2_03.txt, 2_04.txt, 2_05.txt, 2_06.txt, 2_07.txt, 2_08.txt, 2_09.txt, 2_10.txt, 2_11.txt, 2_12.txt, 2_13.txt, 2_14.txt, 2_15.txt
Case Name Status Exec Time Memory
0_00.txt AC 1 ms 768 KB
0_01.txt AC 1 ms 768 KB
0_02.txt AC 5 ms 768 KB
1_00.txt AC 1 ms 768 KB
1_01.txt AC 1 ms 768 KB
1_02.txt AC 1 ms 768 KB
1_03.txt AC 1 ms 768 KB
1_04.txt AC 1 ms 768 KB
1_05.txt AC 1 ms 768 KB
1_06.txt AC 1 ms 768 KB
1_07.txt AC 1 ms 768 KB
1_08.txt AC 1 ms 768 KB
1_09.txt AC 1 ms 768 KB
1_10.txt AC 1 ms 768 KB
1_11.txt AC 1 ms 768 KB
1_12.txt AC 1 ms 768 KB
2_00.txt AC 5 ms 768 KB
2_01.txt AC 6 ms 768 KB
2_02.txt AC 6 ms 768 KB
2_03.txt AC 6 ms 768 KB
2_04.txt AC 4 ms 768 KB
2_05.txt AC 4 ms 768 KB
2_06.txt AC 4 ms 768 KB
2_07.txt AC 4 ms 768 KB
2_08.txt AC 6 ms 768 KB
2_09.txt AC 6 ms 768 KB
2_10.txt AC 7 ms 768 KB
2_11.txt AC 7 ms 768 KB
2_12.txt AC 5 ms 768 KB
2_13.txt AC 6 ms 768 KB
2_14.txt AC 6 ms 768 KB
2_15.txt AC 6 ms 768 KB