oj.uz

Submission #223790

# Submission time Handle Problem Language Result Execution time Memory
223790 2020-04-16T13:03:54 Z socho Red-blue table (IZhO19_stones) C++14
0 / 100
 100 ms 1476 KB 
#include "bits/stdc++.h"
using namespace std;
// #define endl '\n'
// #define double long double
// #define int long long
// int MOD = 1000 * 1000 * 1000 + 7;
// int MOD = 998244353;

int n, m;

int score(vector<vector<bool> > a) {
	int col[m], row[n];
	memset(col, 0, sizeof col);
	memset(row, 0, sizeof row);
	for (int i=0; i<n; i++) {
		for (int j=0; j<m; j++) {
			if (a[i][j]) {
				row[i]++;
				col[j]--;
			}
			else {
				row[i]--;
				col[j]++;
			}
		}
	}
	int ans = 0;
	for (int i=0; i<m; i++) {
		if (col[i] > 0) ans++;
	}
	for (int i=0; i<n; i++) {
		if (row[i] > 0) ans++;
	}
	return ans;
}

void show(vector<vector<bool> > a) {
	for (int i=0; i<n; i++) {
		for (int j=0; j<m; j++) {
			cout << (a[i][j] ? '+' : '-');
		}
		cout << endl;
	}
}

void solve() {
	
	cin >> n >> m;
	
	int rfill = (m + 1) / 2;
	int cfill = (n + 1) / 2;
	
	vector<vector<bool> > grid1(n, vector<bool>(m, 0)); // allrows
	vector<vector<bool> > grid2(n, vector<bool>(m, 1)); // allcols
	
	// true is +, false is -
	
	for (int i=0; i<n; i++) {
		// all rows
		if (i % 2 == 0) {
			for (int j=0; j<rfill; j++) {
				grid1[i][j] = true;
			}
		}
		else {
			int k = m - 1;
			for (int j=0; j<rfill; j++, k--) {
				grid1[i][k] = true;
			}
		}
	}
	
	for (int i=0; i<m; i++) {
		// all cols
		if (i % 2 == 0) {
			for (int j=0; j<cfill; j++) {
				grid2[j][i] = false;
			}
		}
		else {
			int k = n - 1;
			for (int j=0; j<cfill; j++, k--) {
				grid2[k][i] = false;
			}
		}
	}
	
	int asc = score(grid1);
	int bsc = score(grid2);
	
	if (asc > bsc) {
		cout << asc << endl;
		show(grid1);
	}
	else {
		cout << bsc << endl;
		show(grid2);
	}
	
	
}

signed main() {
	
	int t;
	cin >> t;
	while (t--) solve();
	
}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Incorrect 4 ms 256 KB Wrong answer in test 2 4: 0 < 4

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 384 KB Wrong answer in test 20 2: 0 < 20

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Incorrect 4 ms 256 KB Wrong answer in test 2 4: 0 < 4

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 1400 KB Wrong answer in test 97 21: 107 < 116
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 78 ms 1476 KB Wrong answer in test 24 24: 0 < 44
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Incorrect 4 ms 256 KB Wrong answer in test 2 4: 0 < 4