Submission #1151764

#	Time	Username	Problem	Language	Result	Execution time	Memory
1151764		AbdullahIshfaq	Make them Meet (EGOI24_makethemmeet)	C++20	34 / 100	1 ms	328 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 998244353
void solve(){
	ll n, m, u , v;
	cin >> n >> m;
	ll ch = 0;
	for(int i = 0; i < m; i++){
		cin >> u >> v;
		ch += (u == 0 or v == 0);
	}
	if(m == n - 1 and ch == n - 1){
		cout << 2  * n - 1 << '\n';
		for(int i = 1; i < n ; i++){
			for(int j = 0 ; j < n; j ++){
				if(i == j){
					cout << 0 << " ";
				}
				else{
					cout << j << " ";
				}
			}
			cout << '\n';
			for(int j = 0 ; j < n; j ++){
				if(i == j){
					cout << 0 << " ";
				}
				else{
					cout << j << " ";
				}
			}
			cout << '\n';
		}
		for(int i = 0; i < n; i++){
			cout << 0 << " ";
		}
	}
	else{
		cout << n << '\n';
		for (int i = 0; i < n; i++){
			for (int j = 0; j < n; j++){
				cout << (j + (i % 2)) / 2 << ' ';
			}
			cout << '\n';
		}
	}
}
int main() {
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int tests = 1;
	// cin >> tests;
	for(int i = 1; i <= tests; i ++)
		solve();
}

• Subtask 1: 10 / 10
• Subtask 2: 13 / 13
• Subtask 3: 11 / 11
• Subtask 4: 0 / 36
• Subtask 5: 0 / 30