Submission #514062

#	Time	Username	Problem	Language	Result	Execution time	Memory
514062		Aktan	Red-blue table (IZhO19_stones)	C++17	27 / 100	53 ms	1300 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;
    	cout << max(n,m)+((min(n,m)-1)/2) << endl;
		int l=max(n,m),r=min(n,m);
		if(l==n){
			if(m%2==1){
				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(j%2==0){
							cout << "+";
						}
						else if(j==m-1){
							cout << "+";
						}
						else{
							cout << "-";
						}
					}
					cout << endl;
				
			}
		}
	}
	else{
		if(n%2==1){
				for(int i=0;i<n;i++){
					for(int j=0;j<m;j++){
						if(i%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 if(i==n-1){
							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(){
      | ^~~~
stones.cpp: In function 'int main()':
stones.cpp:20:18: warning: unused variable 'r' [-Wunused-variable]
   20 |   int l=max(n,m),r=min(n,m);
      |                  ^

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