Submission #154293

#	Time	Username	Problem	Language	Result	Execution time	Memory
154293		nvmdava	Red-blue table (IZhO19_stones)	C++17	27 / 100	29 ms	1400 KiB

stones

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second

#define N 1200005
#define MOD 1000000007
#define INF 0x3f3f3f3f

void go(){
	int n, m;
	cin>>n>>m;
	int r1 = n + (m - 1) / 2;
	int r2 = m + (n - 1) / 2;

	if(r1 < r2){
		cout<<r2<<'\n';
		for(int i = 1; i <= n; i++){
			for(int j = 1; j <= m; j++){
				if(i > (n - 1) / 2) cout<<'-';
				else cout<<'+';
			}
			cout<<'\n';
		}
	} else {
		cout<<r1<<'\n';
		for(int i = 1; i <= n; i++){
			for(int j = 1; j <= m; j++){
				if(j <= (m - 1) / 2) cout<<'-';
				else cout<<'+';
			}
			cout<<'\n';
		}
	}
}

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

	mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	
	int t;
	cin>>t;
	while(t--){
		go();
	}	
}

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31