Submission #342058

#	Time	Username	Problem	Language	Result	Execution time	Memory
342058		NurstanDuisengaliev	Red-blue table (IZhO19_stones)	C++14	11 / 100	86 ms	4972 KiB

stones

// Nurstan Duisengaliev
// не, не надо меня узнавать 
/*#pragma GCC target ("avx2")
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("O3")*/                   
      
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp> 
 
#define ll long long
#define all(x) x.begin(), x.end()
#define in insert
#define mp make_pair
#define F first
#define S second
#define ppf pop_front
#define pb push_back
#define ppb pop_back
#define pf push_front
#define pii pair <int, int>
#define pll pair <ll, ll>
#define boost() ios_base::sync_with_stdio(0), cin.tie(0)
#define sz(x) (int)x.size()
 
using namespace std;
//using namespace __gnu_pbds;
 
//template<typename T> using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;                         
 
const int N = 1005;
const int mod = (int)1e9 + 7;
const ll INF = (ll)1e18 + 1;
int a[N][N]; 
void solve () {
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i ++) {
		for (int j = 1; j <= m; j ++) a[i][j] = 1;
	}
	if (min (n, m) != 1) {
		for (int i = 1; i <= n / 2 + 1; i ++) {
			for (int j = 1; j <= (m - 1) / 2; j ++) {
				a[i][j] = 0;
			}
		}		
		for (int i = n; i > n - (n / 2 + 1); i --) {
			for (int j = m; j > m - ((m - 1) / 2); j --) {
				a[i][j] = 0;
			}
		}
		cout << (m - 1) / 2 * 2 + n - (m == 2 ? 0 : (m % 2 == 0 ? 2 : 1)) << endl;
		for (int i = 1; i <= n; i ++) {
			for (int j = 1; j <= m; j ++) {
				cout << (a[i][j] == 1 ? '+' : '-');
			}
			cout << endl;
		}
	}
	else {
		cout << max (n, m) << endl;
		if (m == 1) {
			for (int i = 1; i <= n; i ++) {
				for (int j = 1; j <= m; j ++) {
					cout << (a[i][j] == 1 ? '+' : '-');
				}
				cout << endl;
			}	
		}
		else {
			for (int i = 1; i <= n; i ++) {
				for (int j = 1; j <= m; j ++) {
					cout << (a[i][j] == 1 ? '-' : '+');
				}
				cout << endl;
			}		
		}   		
	}       		
}   	    		
 
main () {
//	freopen (".in", "r", stdin);
//	freopen (".out", "w", stdout);
	boost ();
	int TT;
    cin >> TT;
	while (TT --) {
		solve ();
	}
	return 0;	                                    
}                                                   

Compilation message (stderr)

stones.cpp:83:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   83 | main () {
      |       ^

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