Submission #1218814

#	Time	Username	Problem	Language	Result	Execution time	Memory
1218814		blackavar	Vještica (COCI16_vjestica)	C++20	0 / 160	34 ms	584 KiB

vjestica

#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    long long n;
    cin >> n;
    vector<vector<int>> cnt(n, vector<int>(26, 0));
    for (int i = 0; i < n; i++) {
        string s;
        cin >> s;
        for (int j = 0; j < s.size(); j++) cnt[i][s[j] - 'a']++;
    }
    int totalMask = 1 << n;
    vector<int> f(totalMask, 0);
    for (int mask = 1; mask < totalMask; mask++) {
        vector<int> mn(26, 1e6);
        for (char c = 0; c < 26; c++) {
            for (int i = 0; i < n; i++) {
                if (mask & (1 << i)) {
                    mn[c] = min(mn[c], cnt[i][c]);
                }
            }
            if (mn[c] == 1e6) mn[c] = 0;
            f[mask] += mn[c];
        }
    }
    int ans = 0;
    for (int mask = 1; mask < totalMask; mask++) {
        int cntBits = __builtin_popcount(mask);
        if (cntBits % 2 == 0) ans -= f[mask];
        else ans += f[mask];
    }
    cout << 1 + ans;
    return 0;
}

• Subtask 1: 0 / 160