oj.uz

답안 #519360

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
519360 2022-01-26T09:00:47 Z shmad Red-blue table (IZhO19_stones) C++17
0 / 100
 3 ms 588 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast"
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvi = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 60);
const double eps = 1e-6;

void solve () {
	int n, m;
	cin >> n >> m;
	vt< vt<char> > a(n + 1, vt<char> (m + 1, '+'));
	if (m == 1) {
		cout << n << '\n';
		goto here;
	}
	if (n == 1) {
		cout << m << '\n';
		for (int j = 1; j <= m; j++) a[1][j] = '-';
		goto here;
	}
	if ((n & 1) && (m & 1)) {
		cout << n - 1 + m - 1 << '\n';
		for (int i = 1; i < n; i++) {
			for (int j = 1; j < m; j++) {
				if ((i + j) & 1) a[i][j] = '-';
			}
			for (int j = 1; j <= m; j++) a[n][j] = '-';
		}
		goto here;
	}
	here:
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) cout << a[i][j] ;
		cout << '\n';
	}
	cout << '\n';
}

bool testcases = 1;
                  
signed main() {
#ifndef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:58:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |  freopen(".in", "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~
stones.cpp:59:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |  freopen(".out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 3 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 3 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 588 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -