Submission #1127897

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127897		vusal	Red-blue table (IZhO19_stones)	C++20	27 / 100	3 ms	1348 KiB

stones

//mubarizvusal
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

#define allr(v) v.rbegin(), v.rend()
#define all(v) v.begin(), v.end()
#define mcqueen ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define pii pair<int,int>
#define pb push_back
#define new int32_t
#define ts to_string
#define fi first
#define se second
#define ins insert
#define int ll
#define kub(i) i*i*i

new main(){
	mcqueen
int T; cin >> T;
    while(T--){
        int N, M; cin >> N >> M;

        int A1 = N; 
        int B1 = 0; 
        int val1 = A1 + B1; // = N

        int A2 = 0; 
        int B2 = M; 
        int val2 = A2 + B2; // = M

        int c = (M-1)/2; 
        int A3 = N; 
        int B3 = c; 
        int val3 = A3 + B3; // = N + c
      
        int r = (N-1)/2;
        int A4 = r; 
        int B4 = M; 
        int val4 = A4 + B4; // = r + M

        int bestVal = val1;
        int strategy = 1; 
        if(val2 > bestVal) { bestVal = val2; strategy = 2; }
        if(val3 > bestVal) { bestVal = val3; strategy = 3; }
        if(val4 > bestVal) { bestVal = val4; strategy = 4; }

        cout << bestVal << "\n";
        if(strategy == 1){
            for(int i=0; i<N; i++){
                for(int j=0; j<M; j++)
                    cout << '+';
                cout << "\n";
            }
        } else if(strategy == 2){
            for(int i=0; i<N; i++){
                for(int j=0; j<M; j++)
                    cout << '-';
                cout << "\n";
            }
        } else if(strategy == 3){
            vector<string> grid(N, string(M, '+'));
            for(int col=0; col<c; col++){
                for(int i=0; i<N; i++){
                    grid[i][col] = '-';
                }
            }
            for(int i=0; i<N; i++) cout << grid[i] << "\n";
        } else {
            vector<string> grid(N, string(M, '-'));
            for(int row=0; row<r; row++){
                for(int j=0; j<M; j++){
                    grid[row][j] = '+';
                }
            }
            for(int i=0; i<N; i++) cout << grid[i] << "\n";
        }
    }
}

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