Submission #1183845

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183845		asdfghjk	Red-blue table (IZhO19_stones)	C++20	38 / 100	15 ms	1352 KiB

stones

#include <bits/stdc++.h>
#define pb push_back
#define all(x) x.begin(), x.end()
#define F first
#define S second
#define con continue
using  namespace std;
typedef long long ll;
typedef double db;
typedef long double ld;
const ll N = 1000 + 5;
const ll inf = 1e9;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
int a[N][N];
void solve(){
    int n,m;cin >> n >> m;
    if(n < m){
        int res = (m + ((n - 1) / 2));
        int d = m - ((m - 1) / 2);
        int w = (d - (m - d));
        int opr = (m - w);
        d = (n - 1) / 2;
        opr += (d * 2);
        cout << max(opr,res) << '\n';
        if(opr > res){
            for(int i = 1;i <= (n - (d * 2));i++){
                for(int j = 1;j <= m;j++){
                    cout << '-';
                }
                cout << '\n';
            }
            int mr = m - ((m - 1) / 2);
            for(int i = 1;i <= d;i++){
                for(int j = 1;j <= m;j++){
                    if(j <= mr){
                        cout << '+';
                    }
                    else cout << '-';
                }
                cout << '\n';
            }
            for(int i = 1;i <= d;i++){
                for(int j = 1;j <= m;j++){
                    if(j + mr <= m){
                        cout << '-';
                    }
                    else cout << '+';
                }
                cout << '\n';
            }
        }
        else{
            int  q= ((n - 1) / 2);
            for(int i = 1;i <= n;i++){
                for(int j = 1;j <= m;j++){
                    if(i + q <= n){
                        cout << '-';
                    }
                    else cout << '+';
                }
                cout << '\n';
            }
        }
    }
    else{
        //n > m
        int res = n + ((m - 1) / 2);
        int q = (2 - (n % 2));
        int c = ((m - 1) / 2);
        int d = ((n - 1) / 2);
        int opr = (n - q) + (c * 2);
        cout << max(res,opr) << '\n';
        if(opr >= res){
            for(int i = 1;i <= n;i++){
                for(int j = 1;j <= m;j++){
                    if(j + (c * 2) <= m){
                        cout << '+';
                    }
                    else if(j +c <= m){
                        if(i <= d){
                            cout << '+';
                        }
                        else cout << '-';
                    }
                    else{
                        if(i <= n - d){
                            cout << '-';
                        }
                        else cout << '+';
                    }
                }
                cout << '\n';
            }
        }
        else{
            for(int i = 1;i <= n;i++){
                for(int j = 1;j <= m;j++){
                    if(j <= m - c)cout << '+';
                    else cout << '-';
                }
                cout << '\n';
            }
        }
    }
}
//++++--
//++++--
//++++--
//++----
//++----
//++--++
//++--++
//++--++
//
//6 + 4 = 10
//
//++++--
//++++--
//++++--
//++++--
//++++--
//++++--
//++++--
//++++--
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t;cin >> t;
    while(t--){
        solve();
    }
}

Compilation message (stderr)

stones.cpp:126:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  126 | main(){
      | ^~~~

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