oj.uz

Submission #168888

# Submission time Handle Problem Language Result Execution time Memory
168888 2019-12-17T03:19:51 Z abil Red-blue table (IZhO19_stones) C++14
100 / 100
 131 ms 5368 KB 
#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
//#define int long long

using namespace std;

const int N = (1e3 + 12);
const int mod = (1e9 + 7);
const int INF = (0x3f3f3f3f);

int a[N][N], b[N];

main()
{
	int test, n, m;
	scanf("%d", &test);
	while(test--){
		scanf("%d%d", &n, &m);
		if(n >= m){
			int ans = n;
			int midn = m / 2 + 1, midm = n / 2 + 1;
			vector<pair<int,int > > vec;
			for(int i = 1;i <= m; i++){
				for(int j = 1;j <= n; j++){
					vec.pb({b[j], j});
				}
				sort(all(vec));
				if(vec[midm - 1].fr < m - midn){
					ans++;
					for(int j = 0;j < midm; j++){
						a[vec[j].sc][i] = 1;
						b[vec[j].sc]++;
					}
					vec.clear();
				}
				else{
					break;
				}
			}
			cout << ans << endl;
			for(int i = 1;i <= n; i++){
				for(int j = 1;j <= m; j++){
					if(a[i][j]){
						printf("-");
					}
					else{
						printf("+");
					}
				}
				cout << endl;
			}
		}
		else{
			int ans = m;
			int midn = m / 2 + 1, midm = n / 2 + 1;
			vector<pair<int,int > > vec;
			for(int i = 1;i <= n; i++){
				for(int j = 1;j <= m; j++){
					vec.pb({b[j], j});
				}
				sort(all(vec));
				if(vec[midn - 1].fr < n - midm){
					ans++;
					for(int j = 0;j < midn; j++){
						a[i][vec[j].sc] = 1;
						b[vec[j].sc]++;
					}
					vec.clear();
				}
				else{
					break;
				}
			}
			cout << ans << endl;
			for(int i = 1;i <= n; i++){
				for(int j = 1;j <= m; j++){
					if(a[i][j]){
						printf("+");
					}
					else{
						printf("-");
					}
				}
				cout << endl;
			}
		}
		for(int i = 1;i <= n; i++){
			for(int j = 1;j <= m; j++){
				a[i][j] = 0;
			}
		}
		for(int i = 1;i <= max(n, m); i++){
			b[i] = 0;
		}
	}
}

Compilation message

stones.cpp:18:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
stones.cpp: In function 'int main()':
stones.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &test);
  ~~~~~^~~~~~~~~~~~~
stones.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &m);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 508 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 15 ms 508 KB Output is correct
4 Correct 24 ms 504 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 1792 KB Output is correct
2 Correct 81 ms 4216 KB Output is correct
3 Correct 83 ms 4984 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 1944 KB Output is correct
2 Correct 80 ms 4072 KB Output is correct
3 Correct 78 ms 3348 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 15 ms 508 KB Output is correct
4 Correct 24 ms 504 KB Output is correct
5 Correct 131 ms 1792 KB Output is correct
6 Correct 81 ms 4216 KB Output is correct
7 Correct 83 ms 4984 KB Output is correct
8 Correct 99 ms 1944 KB Output is correct
9 Correct 80 ms 4072 KB Output is correct
10 Correct 78 ms 3348 KB Output is correct
11 Correct 56 ms 732 KB Output is correct
12 Correct 80 ms 4316 KB Output is correct
13 Correct 82 ms 4728 KB Output is correct
14 Correct 69 ms 3964 KB Output is correct
15 Correct 106 ms 5368 KB Output is correct
16 Correct 67 ms 4344 KB Output is correct
17 Correct 33 ms 3320 KB Output is correct