Submission #237390

#	Time	Username	Problem	Language	Result	Execution time	Memory
237390		marlicu	Ronald (COCI17_ronald)	C++14	120 / 120	45 ms	4216 KiB

ronald

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e3 + 5;

int n;
bool linija[MAXN][MAXN];
bool kopija[MAXN][MAXN];

void promjena (int x) {
    for (int i = 0; i < n; i++) {
        if (i == x) continue;
        kopija[i][x] = kopija[x][i] = 1 - kopija[i][x];
    }
}

bool ok(int pocetno) {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            kopija[i][j] = linija[i][j];
        }
    }

    if (pocetno) promjena(0);

    for (int i = 1; i < n; i++) {
        if (!kopija[0][i]) promjena(i);
    }

    int koliko;
    for (int i = 0; i < n; i++) {
        koliko = 0;
        for (int j = 0; j < n; j++) {
            if (kopija[i][j] || i == j) koliko++;
        }
        if (koliko != n) return false;
    }

    return true;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);

    cin >> n;

    int m, a, b;
    cin >> m;
    for (int i = 0; i < m; i++) {
        cin >> a >> b;
        a--; b--;
        linija[a][b]++;
        linija[b][a]++;
    }

    if (ok(0) || ok(1)) cout << "DA\n";
    else cout << "NE\n";

    return 0;
}

Compilation message (stderr)

ronald.cpp: In function 'int main()':
ronald.cpp:54:21: warning: use of an operand of type 'bool' in 'operator++' is deprecated [-Wdeprecated]
         linija[a][b]++;
                     ^~
ronald.cpp:55:21: warning: use of an operand of type 'bool' in 'operator++' is deprecated [-Wdeprecated]
         linija[b][a]++;
                     ^~

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 15 / 15
• Subtask 4: 15 / 15
• Subtask 5: 15 / 15
• Subtask 6: 15 / 15
• Subtask 7: 15 / 15
• Subtask 8: 15 / 15