Submission #715088

#	Time	Username	Problem	Language	Result	Execution time	Memory
715088		keystone	Set (COCI21_set)	C++14	0 / 110	1 ms	212 KiB

Main

#include <iostream>
#include <cstring>

using namespace std;

int main() {
    int n, k;
    cin >> n >> k;

    int cards[n][k];
    for (int i = 0; i < n; i++) {
        string s;
        cin >> s;
        for (int j = 0; j < k; j++) {
            cards[i][j] = s[j] - '0';
        }
    }

    int count = 0;
    for (int i = 0; i < n-2; i++) {
        for (int j = i+1; j < n-1; j++) {
            bool is_set = true;
            for (int l = 0; l < k; l++) {
                int sum = cards[i][l] + cards[j][l] + cards[n-1][l];
                if (sum % 3 != 0 && sum % 3 != 3) {
                    is_set = false;
                    break;
                }
            }
            if (is_set) {
                count++;
            }
        }
    }

    cout << count << endl;

    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 30
• Subtask 3: 0 / 70