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Submission #47594

# Submission time Handle Problem Language Result Execution time Memory
47594 2018-05-05T10:40:52 Z Vasiljko Kronican (COCI16_kronican) C++14
100 / 100
 1467 ms 8972 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const ll MOD = 1e9+7;
const int N = 21;
const int INF = 1e9;
int n,k;
int dp[1<<N],a[N][N];

int solve(int mask){
    if(__builtin_popcount(mask)==k)return 0;
    if(dp[mask]!=-1)return dp[mask];

    int sol=INF;

    for(int i=0;i<n;i++){
        if(!(mask&(1<<i)))continue;
        for(int j=0;j<n;j++){
            if(i==j)continue;
            if(!(mask&(1<<j)))continue;
            sol=min(sol,solve(mask^(1<<i))+a[i][j]);
        }
    }
    dp[mask]=sol;
    return sol;
}


int main()
{
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    cin>>n>>k;
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++)cin>>a[i][j];
    }
    memset(dp,-1,sizeof(dp));
    cout<<solve((1<<n)-1);
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 8568 KB Output is correct
2 Correct 7 ms 8568 KB Output is correct
3 Correct 7 ms 8756 KB Output is correct
4 Correct 7 ms 8756 KB Output is correct
5 Correct 18 ms 8756 KB Output is correct
6 Correct 33 ms 8756 KB Output is correct
7 Correct 56 ms 8804 KB Output is correct
8 Correct 119 ms 8840 KB Output is correct
9 Correct 1467 ms 8972 KB Output is correct
10 Correct 143 ms 8972 KB Output is correct