oj.uz

Submission #379936

# Submission time Handle Problem Language Result Execution time Memory
379936 2021-03-19T18:42:46 Z vishesh312 Kronican (COCI16_kronican) C++17
100 / 100
 1160 ms 4460 KB 
#include "bits/stdc++.h"
using namespace std;
/*
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using ordered_set = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
*/

#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()

using ll = long long;
const int mod = 1e9+7;

vector<int> dp;
vector<vector<int>> v;
int n, k;

int rec(int mask) {
    if (__builtin_popcount(mask) == n) {
        return dp[mask] = 0;
    }
    if (dp[mask] != -1) {
        return dp[mask];
    }
    dp[mask] = 1e9;
    for (int i = 0; i < n; ++i) {
        if (!(mask&(1<<i))) {
            for (int j = 0; j < n; ++j) {
                if (mask&(1<<j)) {
                    dp[mask] = min(dp[mask], rec(mask|(1<<i)) + v[i][j]);
                }
            }
        }
    }
    return dp[mask];
}

void solve(int tc) {
    cin >> n >> k;
    dp.resize(1<<n, -1);
    v.resize(n);
    for (auto &x : v) {
        x.resize(n);
        for (auto &y : x) cin >> y;
    }
    int ans = 1e9;
    for (int mask = 0; mask < (1<<n); ++mask) {
        if (__builtin_popcount(mask) == k) {
            ans = min(ans, rec(mask));
        }
    }
    cout << ans << '\n';
}

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int tc = 1;
    //cin >> tc;
    for (int i = 1; i <= tc; ++i) solve(i);
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 12 ms 364 KB Output is correct
6 Correct 21 ms 492 KB Output is correct
7 Correct 44 ms 620 KB Output is correct
8 Correct 104 ms 896 KB Output is correct
9 Correct 1160 ms 4460 KB Output is correct
10 Correct 138 ms 4460 KB Output is correct