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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#103944#6378. LaLa and Monster Hunting (Part 1)chenshiWA 1ms3908kbC++772b2023-05-07 23:04:492023-05-07 23:04:52

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.
  • [2023-05-07 23:04:52]
  • 评测
  • 测评结果：WA
  • 用时：1ms
  • 内存：3908kb
查看
  • [2023-05-07 23:04:49]
  • 提交

answer

#include<cstdio>
#include<cmath>
#include<algorithm>
using namespace std;
const int o=2e6+10;const double PI=acos(-1);
int n,cnt;double a,b;
struct info{double l,r;}v[o];
inline bool cmp(info A,info B){return A.l<B.l;}
int main(){
	scanf("%d",&n);
	for(int i=1,x,y,r;i<=n;++i){
		scanf("%d%d%d",&x,&y,&r);
		if(x*1ll*x+y*1ll*y<=r*1ll*r){printf("Yes");return 0;}
		a=asin(r/sqrt(x*1ll*x+y*1ll*y));b=atan2(y,x);
		a=a-b;b=a+b*2;
		if(a<0) a+=PI*2;
		if(b>PI*2) b-=PI*2;
		if(a<=b) v[++cnt]=(info){a,b};
		else v[++cnt]=(info){a,PI*2},v[++cnt]=(info){0,b};
	}
	v[++cnt]=(info){0,0};v[++cnt]=(info){PI*2,PI*2};
	sort(v+1,v+cnt+1,cmp);a=v[1].r;
	for(int i=2;i<=cnt;a=max(a,v[i++].r)) if(v[i].l>a+PI){printf("No");return 0;}
	printf("Yes");
	return 0;
}
Source code, Language: C++

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 2184kb

input:

3
-3 0 1
0 0 3
3 0 1

output:

Yes

result:

ok answer is YES

Test #2:

score: 0
Accepted
time: 1ms
memory: 2196kb

input:

3
2 0 1
0 2 1
-5 -5 3

output:

Yes

result:

ok answer is YES

Test #3:

score: 0
Accepted
time: 0ms
memory: 2228kb

input:

1
3 3 1

output:

No

result:

ok answer is NO

Test #4:

score: 0
Accepted
time: 1ms
memory: 1844kb

input:

1
-3 -2 5

output:

Yes

result:

ok answer is YES

Test #5:

score: 0
Accepted
time: 1ms
memory: 1912kb

input:

2
1 3 5
-2 -6 1

output:

Yes

result:

ok answer is YES

Test #6:

score: 0
Accepted
time: 1ms
memory: 2216kb

input:

3
-14 7 7
2 -1 3
8 -1 9

output:

Yes

result:

ok answer is YES

Test #7:

score: 0
Accepted
time: 1ms
memory: 1796kb

input:

4
5 -3 9
-10 6 5
4 2 2
-8 10 2

output:

Yes

result:

ok answer is YES

Test #8:

score: 0
Accepted
time: 1ms
memory: 1844kb

input:

5
-2 -1 4
9 10 5
-9 2 4
6 -3 5
0 -4 10

output:

Yes

result:

ok answer is YES

Test #9:

score: 0
Accepted
time: 1ms
memory: 1744kb

input:

6
-3 -1 6
3 1 8
1 2 4
1 -3 5
3 7 4
5 5 4

output:

Yes

result:

ok answer is YES

Test #10:

score: 0
Accepted
time: 1ms
memory: 1800kb

input:

7
3 -2 5
-1 10 7
-1 10 3
1 -5 5
-9 -9 4
-5 -10 5
1 4 9

output:

Yes

result:

ok answer is YES

Test #11:

score: 0
Accepted
time: 1ms
memory: 1880kb

input:

8
3 -1 5
1 7 2
-2 -10 6
-1 6 4
-2 0 9
0 9 6
-7 1 7
5 -2 7

output:

Yes

result:

ok answer is YES

Test #12:

score: 0
Accepted
time: 1ms
memory: 3908kb

input:

9
-1 0 8
2 0 8
-8 -10 2
8 -2 1
-5 -8 0
-2 -3 5
-7 -4 9
-3 9 8
-10 10 7

output:

Yes

result:

ok answer is YES

Test #13:

score: 0
Accepted
time: 1ms
memory: 1868kb

input:

10
-3 0 4
3 -1 8
7 0 6
-6 -10 2
4 5 2
-7 -5 0
-7 4 7
10 7 0
-3 0 9
7 -6 6

output:

Yes

result:

ok answer is YES

Test #14:

score: 0
Accepted
time: 1ms
memory: 1796kb

input:

11
0 -4 7
5 9 4
-8 0 2
-10 8 5
7 9 1
7 8 8
4 -8 5
8 6 9
2 -7 8
3 4 0
10 -8 10

output:

Yes

result:

ok answer is YES

Test #15:

score: 0
Accepted
time: 1ms
memory: 1856kb

input:

12
2 3 5
-5 -9 5
5 -10 3
9 -10 9
-4 -10 0
10 5 1
-3 -5 7
2 10 10
0 7 10
-10 -7 5
-7 1 9
0 4 8

output:

Yes

result:

ok answer is YES

Test #16:

score: 0
Accepted
time: 1ms
memory: 1844kb

input:

13
3 0 5
-12 0 4
2 2 8
6 3 4
5 -3 0
3 -4 9
-9 5 9
-1 -3 5
4 -1 2
1 -3 10
-10 2 3
-7 9 7
-6 9 3

output:

Yes

result:

ok answer is YES

Test #17:

score: 0
Accepted
time: 0ms
memory: 1848kb

input:

14
2 1 4
8 -3 0
-7 -4 2
10 -6 5
-4 -4 4
1 1 2
4 6 5
-3 -5 5
10 -10 1
4 -6 2
-4 9 3
-3 10 8
-6 6 10
8 -8 1

output:

Yes

result:

ok answer is YES

Test #18:

score: 0
Accepted
time: 1ms
memory: 1916kb

input:

15
1 2 6
-1 -2 3
9 -10 2
0 5 6
8 10 8
-2 -6 9
-7 4 0
6 -10 1
-6 -3 10
7 -3 2
5 -9 5
10 0 3
9 -6 1
0 -1 3
-8 -3 5

output:

Yes

result:

ok answer is YES

Test #19:

score: 0
Accepted
time: 1ms
memory: 1900kb

input:

16
0 -8 9
1 -4 0
-8 -3 7
-6 -7 7
3 -7 9
-9 7 10
4 1 1
-9 2 7
1 -7 7
-5 -3 3
4 4 3
-1 -9 2
-4 -1 7
-8 -2 10
-6 1 3
-1 -8 3

output:

Yes

result:

ok answer is YES

Test #20:

score: 0
Accepted
time: 0ms
memory: 1784kb

input:

17
0 4 7
-6 8 0
6 6 4
3 -8 7
-6 2 6
-10 8 3
-10 9 8
-9 1 9
-10 8 2
-9 0 7
-5 1 1
2 -4 5
-3 -5 0
-4 0 6
1 -2 0
6 -4 4
-2 -7 3

output:

Yes

result:

ok answer is YES

Test #21:

score: 0
Accepted
time: 1ms
memory: 2168kb

input:

18
-3 -3 1
5 5 8
7 -6 8
-10 3 4
10 1 2
7 -10 10
3 -4 9
1 5 6
-10 -4 1
3 -4 2
4 -5 9
3 -6 4
3 1 7
9 -3 5
6 9 8
5 -6 2
9 -2 5
10 3 2

output:

Yes

result:

ok answer is YES

Test #22:

score: 0
Accepted
time: 1ms
memory: 1852kb

input:

19
4 -1 8
-5 5 1
-5 -4 7
-9 -10 7
-8 6 0
10 10 6
2 -6 9
1 1 6
-9 -6 7
-8 -5 5
2 -7 9
1 -1 4
-7 4 5
-3 3 10
1 6 6
2 4 6
-7 3 10
-5 -4 8
9 -4 6

output:

Yes

result:

ok answer is YES

Test #23:

score: 0
Accepted
time: 1ms
memory: 1852kb

input:

20
1 0 2
-10 3 7
9 -3 7
0 -10 7
7 -6 8
-5 6 7
5 6 5
7 8 8
-4 -10 9
-8 -10 8
2 -5 5
-5 -5 9
-5 9 10
1 9 1
-7 6 4
0 -1 6
-5 7 9
-1 -4 5
-4 4 6
3 6 2

output:

Yes

result:

ok answer is YES

Test #24:

score: -100
Wrong Answer
time: 1ms
memory: 2232kb

input:

3
-6 -6 2
-10 -8 8
-7 -7 5

output:

Yes

result:

wrong answer expected NO, found YES
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