Submission #1226698

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226698		nanaseyuzuki	Kronican (COCI16_kronican)	C++20	0 / 100	2096 ms	43528 KiB

kronican

#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pii pair<int, int>
const int mn = 21, inf = 1e18;

int n, k, a[mn][mn];
int dp[mn][(1 << 19) + 1];

void solve(){
    cin >> n >> k;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            cin >> a[i][j];
        }
    }
    fill(&dp[0][0], &dp[0][0] + mn * ((1 << 19) + 1), inf);
    for(int mask = 0; mask < (1 << n); mask++){
        vector <int> cand;
        for(int i = 0; i < n; i++){
            if(mask & (1 << i)) cand.push_back(i);
        }
        dp[1][mask] = INT_MAX;
        for(auto i : cand){
            int val = 0;
            for(auto j : cand){
                val += a[i][j];
            }
            dp[1][mask] = min(dp[1][mask], val);
        }
    }

    dp[1][0] = 0;
    for(int i = 2; i <= k; i++){
        for(int mask = 0; mask < (1 << n); mask++){
            dp[i][mask] = dp[i - 1][mask];
            for(int sub = mask; sub; sub = (sub - 1) & mask){
                dp[i][mask] = min(dp[i - 1][sub] + dp[1][mask - sub], dp[i][mask]);
            }
        }
    }
    cout << dp[k][(1 << n) - 1];
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t = 1;
    // cin >> t;
    while(t--){
        solve();
    }
    return 0;
}

Compilation message (stderr)

kronican.cpp:6:26: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
    6 | const int mn = 21, inf = 1e18;
      |                          ^~~~

• Subtask 1: 0 / 100