Submission #782260

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
782260	2023-07-13 16:46:53	magician	Amusement Park (CEOI19_amusementpark)	C++14	42 / 100	1544 ms	170720 KiB

amusementpark

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#include<bits/stdc++.h>
#define MASK(x) (1LL << (x))
#define BIT(x, i) (((x) >> (i)) & 1)
using namespace std;
const int MAXN = 18;
const int MOD = 998244353;
int N, M;
int adj[MAXN];
int main() {
        ios::sync_with_stdio(0);
        cin.tie(0);
        // freopen("a.in", "r", stdin); freopen("a.out", "w", stdout);
        cin >> N >> M;
        for(int i = 0; i < M; i++) {
                int a, b;
                cin >> a >> b;
                a--;
                b--;
                adj[a] ^= MASK(b);
        }
//        if(N <= 6)
//        {
//                vector<pair<int, int>> e;
//                for(int i = 0; i < N; i++)
//                        for(int j = 0; j < N; j++)
//                                if(BIT(adj[i], j))
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 23 / 23
• Subtask 4: 0 / 21
• Subtask 5: 0 / 37