Submission #286719

#	Time	Username	Problem	Language	Result	Execution time	Memory
286719		errorgorn	Red-blue table (IZhO19_stones)	C++14	27 / 100	30 ms	1400 KiB

stones

//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n,m;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	int TC;
	cin>>TC;
	while (TC--){
		cin>>n>>m;
		
		if (n<m){
			int temp=(n-1)/2;
			cout<<m+temp<<endl;
			rep(x,0,n-temp){
				rep(y,0,m) cout<<"-";
				cout<<endl;
			}
			rep(x,0,temp){
				rep(y,0,m) cout<<"+";
				cout<<endl;
			}
		}
		else{
			int temp=(m-1)/2;
			cout<<n+temp<<endl;
			rep(x,0,n){
				rep(y,0,m-temp) cout<<"+";
				rep(y,0,temp) cout<<"-";
				cout<<endl;
			}
		}
	}
}

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