Submission #799557

#	Time	Username	Problem	Language	Result	Execution time	Memory
799557		vjudge1	Cards (LMIO19_korteles)	C++17	36 / 100	1095 ms	30228 KiB

korteles

#include <iostream>
#include <map>
using namespace std;
map<tuple<char, char, char, char>, long long int> m;
struct DOM {
    char a, b, x, y;
};
bool check(DOM aa, DOM bb) {
    if (aa.a == bb.x && aa.b == bb.y) return 1;
    if (aa.b == bb.a && aa.y == bb.x) return 1;
    if (aa.x == bb.a && aa.y == bb.b) return 1;
    if (aa.a == bb.b && aa.x == bb.y) return 1;
    return 0;
}
DOM a[100005];
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    long long int n, res = 0;
    cin >> n;
    if (n <= 2500) {
        for (int i = 1; i <= n; i++) {
            cin >> a[i].a >> a[i].b >> a[i].x >> a[i].y;
            for (int j = 1; j < i; j++) {
                if (check(a[i], a[j])) {
                    res++;
                }
            }
        }
        cout << res;
        return 0;
    }
    for (int i = 1; i <= n; i++) {
        char a, b, x, y;
        cin >> a >> b >> x >> y;
        char r = '?';
        res += m[{r, r, a, b}] + m[{b, r, y, r}] + m[{r, a, r, x}] + m[{x, y, r, r}];
        res -= m[{b, a, y, x}] + m[{x, y, a, b}];
        if (y == a) res -= m[{x, y, r, x}];
        if (y == a) res -= m[{b, r, a, b}];
        if (x == b) res -= m[{b, y, y, r}];
        if (x == b) res -= m[{r, a, a, x}];
        if (b == x && a == y) {
            res += m[{b, a, y, x}] * 3;
        }
        m[{a, b, r, r}]++;
        m[{r, b, r, y}]++;
        m[{a, r, x, r}]++;
        m[{r, r, x, y}]++;
        m[{r, b, x, y}]++;
        m[{a, r, x, y}]++;
        m[{a, b, r, y}]++;
        m[{a, b, x, r}]++;
        m[{a, b, x, y}]++;
    }
    cout << res;
}

• Subtask 1: 16 / 16
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 19
• Subtask 5: 0 / 25