oj.uz

답안 #238954

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
238954 2020-06-13T18:29:22 Z dolphingarlic PIN (CEOI10_pin) C++14
60 / 100
 235 ms 11768 KB 
#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
typedef long long ll;
using namespace std;

map<ll, ll> cnt[16];

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n, d;
    cin >> n >> d;
    FOR(i, 0, n) {
        string s;
        cin >> s;
        FOR(j, 0, 16) {
            ll hsh = 0;
            FOR(k, 0, 4) if (j & (1 << k))
                hsh += ll(s[k] - '0' + 1) << (k * 10);
            cnt[j][hsh]++;
        }
    }

    ll ans = 0;
    FOR(i, 0, 16) {
        if (4 - __builtin_popcount(i) > d) continue;
        ll contrib = 0;
        for (pair<ll, ll> j : cnt[i])
            contrib += j.second * (j.second - 1) / 2;
        if ((d - 4 + __builtin_popcount(i)) & 1) ans -= contrib;
        else ans += contrib;
    }
    cout << ans;
    return 0;
}

Subtask #1
60.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 896 KB Output is correct
2 Incorrect 8 ms 896 KB Output isn't correct
3 Correct 7 ms 768 KB Output is correct
4 Correct 45 ms 2680 KB Output is correct
5 Correct 66 ms 3064 KB Output is correct
6 Incorrect 59 ms 2936 KB Output isn't correct
7 Incorrect 48 ms 2680 KB Output isn't correct
8 Correct 81 ms 3136 KB Output is correct
9 Correct 94 ms 4216 KB Output is correct
10 Incorrect 110 ms 4600 KB Output isn't correct
11 Incorrect 58 ms 3192 KB Output isn't correct
12 Incorrect 124 ms 4600 KB Output isn't correct
13 Incorrect 81 ms 3296 KB Output isn't correct
14 Correct 79 ms 3196 KB Output is correct
15 Correct 100 ms 4472 KB Output is correct
16 Correct 224 ms 9084 KB Output is correct
17 Incorrect 235 ms 11768 KB Output isn't correct
18 Correct 227 ms 9720 KB Output is correct
19 Correct 191 ms 10872 KB Output is correct
20 Correct 207 ms 11640 KB Output is correct