Submission #514025

#	Time	Username	Problem	Language	Result	Execution time	Memory
514025		Aktan	Red-blue table (IZhO19_stones)	C++17	0 / 100	54 ms	1280 KiB

stones

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define int long long
#define ft first
#define sc second
using namespace std;
const int mod=1e9+7,INF=1e17;


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

Compilation message (stderr)

stones.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main(){
      | ^~~~

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