제출 #111920

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
111920		fredbr	Parametriziran (COCI19_parametriziran)	C++17	0 / 110	236 ms	2816 KiB

Main

#include <bits/stdc++.h>

#pragma GCC target("popcnt")

using namespace std;

int const maxn = 50000;
int const maxm = 7;

bitset<maxn> cnt[6][26];
bitset<maxn> tmp;

int main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);

    int n, m;
    cin >> n >> m;

    vector<string> v(n);

    for (int i = 0; i < n; i++) {
        auto& s = v[i];
        cin >> s;

        for (int j = 0; j < m; j++) {
            if (s[j] == '?')
                for (int k = 0; k < 26; k++)
                    cnt[j][k][i] = true;
            else
                cnt[j][s[j] - 'a'][i] = true;
        }
    }

    int64_t ans = 0;
    for (int j = 0; j < n; j++) {
        auto const& s = v[j];
        tmp.reset();
        tmp.flip();
        tmp >>= j+1;

        for (int i = 0; i < m; i++) {
            char c = s[i];

            if (c == '?') continue;
            tmp &= cnt[i][c-'a'];
        }
        ans += tmp.count();
    }

    cout << ans << "\n";
}

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