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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#74252#5438. Half MixedXKErrorWA 200ms3736kbC++141.2kb2023-01-31 11:34:392023-01-31 11:34:42

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-01-31 11:34:42]
  • 评测
  • 测评结果:WA
  • 用时:200ms
  • 内存:3736kb
  • [2023-01-31 11:34:39]
  • 提交

answer

#include <bits/stdc++.h>

#define maxn 5000005
#define ll long long

using namespace std;

int n, m;
int a[maxn];

ll c(int x) {
	return 1ll * x * (x + 1) / 2;
}

int main() {
	int t;
	scanf("%d", &t);
	while (t--) {
		scanf("%d%d", &n, &m);
		if (c(n) % 2 && c(m) % 2) {
			puts("No");
			continue;
		}
		puts("Yes");
		if (c(n) & 1) {
			ll s = c(m) / 2;
			int w = 0;
			int f = 0;
			for (int i = m - 1; i; i--) {
				while (s > c(i) || (s == c(i) && w + i == m)) {
//					cout<<"@"<<i<<endl;
					s -= c(i);
					for (int j = 1; j <= i; j++) a[++w] = f;
					f ^= 1;
				}
			}
//			for (int w = 1; w <= )
			for (int i = 1; i <= n; i++) {
				for (int j = 1; j <= m; j++) {
					printf("%d ", a[j]);
				}
				puts("");
			}
//			assert(w == m);
		}
		else {
			ll s = c(n) / 2;
			int w = 0;
			int f = 0;
			for (int i = n - 1; i; i--) {
				while (s > c(i) || (s == c(i) && w + i == n)) {
					s -= c(i);
					for (int j = 1; j <= i; j++) a[++w] = f;
					f ^= 1;
				}
			}
			for (int i = 1; i <= n; i++) {
				for (int j = 1; j <= m; j++) {
					printf("%d ", a[i]);
				}
				puts("");
			}
		}
	}
	
	
	return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 2ms
memory: 3500kb

input:

2
2 3
1 1

output:

Yes
0 1 0 
0 1 0 
No

result:

ok OK, Accepted. (2 test cases)

Test #2:

score: -100
Wrong Answer
time: 200ms
memory: 3736kb

input:

5382
1 1
1 2
2 1
1 3
2 2
3 1
1 4
2 3
3 2
4 1
1 5
2 4
3 3
4 2
5 1
1 6
2 5
3 4
4 3
5 2
6 1
1 7
2 6
3 5
4 4
5 3
6 2
7 1
1 8
2 7
3 6
4 5
5 4
6 3
7 2
8 1
1 9
2 8
3 7
4 6
5 5
6 4
7 3
8 2
9 1
1 10
2 9
3 8
4 7
5 6
6 5
7 4
8 3
9 2
10 1
1 11
2 10
3 9
4 8
5 7
6 6
7 5
8 4
9 3
10 2
11 1
1 12
2 11
3 10
4 9
5 8
6 ...

output:

No
No
No
Yes
0 1 0 
No
Yes
0 
1 
0 
Yes
0 0 1 0 
Yes
0 1 0 
0 1 0 
Yes
0 0 
1 1 
0 0 
Yes
0 
0 
1 
0 
No
Yes
0 0 1 0 
0 0 1 0 
Yes
0 0 0 
1 1 1 
0 0 0 
Yes
0 0 
0 0 
1 1 
0 0 
No
No
No
Yes
0 0 0 0 
1 1 1 1 
0 0 0 0 
Yes
0 0 0 
0 0 0 
1 1 1 
0 0 0 
No
No
Yes
0 0 0 0 1 1 0 
No
Yes
0 0 0 0 0 
1 1 1 1 1...

result:

wrong answer 38 Mixed Submatrices Found, but 39 Expected (test case 67)