oj.uz

Submission #683753

# Submission time Handle Problem Language Result Execution time Memory
683753 2023-01-19T09:44:37 Z gagik_2007 Red-blue table (IZhO19_stones) C++17
100 / 100
 43 ms 2216 KB 
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <cmath>
#include <chrono>
#include <ctime>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <limits>
#include <iomanip>
#include <unordered_set>
#include <unordered_map>
#include <fstream>
#include <functional>
#include <random>
#include <cassert>
using namespace std;

typedef long long ll;
typedef long double ld;

#define ff first
#define ss second

ll ttt;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const ll N = 1007;
ll n, m, k;
char a[N][N];
ll c[N];

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin >> ttt;
	while (ttt--) {
		cin >> n >> m;
		fill(c, c + max(n, m), 0);
		if (n > m) {
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					a[i][j] = '+';
				}
			}
			int ans = n;
			int col = 0;
			int cur = 0;
			int ccnt = 0;
			while (cur < (m + 1) / 2 - 1 && col < m) {
				bool doneacol = false;
				for (int i = 0; i < n; i++) {
					if (c[i] == cur && a[i][col] == '+') {
						a[i][col] = '-';
						c[i]++;
						ccnt++;
						if (ccnt > n / 2) {
							doneacol = true;
							col++;
							ccnt = 0;
							ans++;
							break;
						}
					}
				}
				if (!doneacol) {
					cur++;
				}
			}
			cout << ans << endl;
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					cout << a[i][j];
				}
				cout << endl;
			}
		}
		else {
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					a[i][j] = '-';
				}
			}
			int ans = m;
			int r = 0;
			int cur = 0;
			int ccnt = 0;
			while (cur < (n + 1) / 2 - 1 && r < n) {
				bool donearow = false;
				for (int j = 0; j < m; j++) {
					if (c[j] == cur && a[r][j] == '-') {
						a[r][j] = '+';
						c[j]++;
						ccnt++;
						if (ccnt > m / 2) {
							donearow = true;
							r++;
							ccnt = 0;
							ans++;
							break;
						}
					}
				}
				if (!donearow) {
					cur++;
				}
			}
			cout << ans << endl;
			for (int i = 0; i < n; i++) {
				for (int j = 0; j < m; j++) {
					cout << a[i][j];
				}
				cout << endl;
			}
		}
	}
	return 0;
}

/// ---- - --------  ------ -------- -- - - -
/// Just a reminder. Ubuntu password is I O I
/// ---- - --------  ------ -------- -- - - -

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 6 ms 340 KB Output is correct
4 Correct 10 ms 416 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 1320 KB Output is correct
2 Correct 22 ms 1880 KB Output is correct
3 Correct 27 ms 2028 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 1452 KB Output is correct
2 Correct 26 ms 1848 KB Output is correct
3 Correct 23 ms 1620 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 6 ms 340 KB Output is correct
4 Correct 10 ms 416 KB Output is correct
5 Correct 43 ms 1320 KB Output is correct
6 Correct 22 ms 1880 KB Output is correct
7 Correct 27 ms 2028 KB Output is correct
8 Correct 39 ms 1452 KB Output is correct
9 Correct 26 ms 1848 KB Output is correct
10 Correct 23 ms 1620 KB Output is correct
11 Correct 22 ms 544 KB Output is correct
12 Correct 26 ms 1868 KB Output is correct
13 Correct 21 ms 1996 KB Output is correct
14 Correct 25 ms 1620 KB Output is correct
15 Correct 25 ms 2216 KB Output is correct
16 Correct 17 ms 1744 KB Output is correct
17 Correct 8 ms 1288 KB Output is correct