Submission #503943

#	Time	Username	Problem	Language	Result	Execution time	Memory
503943		tmn2005	Red-blue table (IZhO19_stones)	C++17	27 / 100	50 ms	1300 KiB

stones

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;

#define ar array
#define fr first
#define sc second

#define vec vector
#define ret return

#define ins insert
#define mk make_pair
#define pb push_back
#define pf push_front
#define pob pop_back
#define pof pop_front

#define int long long

#define pii pair<int,int>

#define all(s) s.begin(), s.end()
#define allr(s) s.rbegin(), s.rend()

#define NeedForSpeed ios::sync_with_stdio(0),cin.tie(0);
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
const int N=1e6+12,INF=1e9,mod = 1e9+7;
bool iswowel(char n){ n = toupper(n); if(n == 'A' || n == 'O' || n == 'U' || n == 'E' || n == 'I') return true; else return false;}
int n, m, k, x, y, l, r, o, ans, res, ok, mx, mn = INF;
int a, b, c;

main(){
	NeedForSpeed
    cin>>o;
    while(o--){
    	cin>>n>>m;
    	cout<<max(n, m) + max(0ll, (min(n, m) - min(n, m) / 2 - 1))<<endl;
    	
    	if(n >= m){
    		for(int i=1; i<=n; i++){
    			for(int j=1; j<=m; j++){
    				if(j <= m/2+1)cout<<"+";
    				else cout<<"-";
				}
				cout<<endl;
			}
		}
		else{
			for(int i=1; i<=n; i++){
    			for(int j=1; j<=m; j++){
    				if(i <= n/2+1)cout<<"-";
    				else cout<<"+";
				}
				cout<<endl;
			}
		}
	}




	return 0;
}

Compilation message (stderr)

stones.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      | ^~~~

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