QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #686511 | #5426. Drain the Water Tank | wangxiaorui# | WA | 0ms | 3696kb | C++14 | 694b | 2024-10-29 13:56:07 | 2024-10-29 13:56:13 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
struct node{
int x,y;
}a[2005];
int n,ans;
int main(){
ios::sync_with_stdio(false);
cin.tie(0);cout.tie(0);
cin>>n;
for(int i=0;i<n;i++) cin>>a[i].x>>a[i].y;
int p=0;
for(int i=1;i<n;i++)
{
if(a[i].y<a[p].y) p=i;
}
int fl=1;
for(int i=p;i<n;i++)
{
if(a[i].x<a[(i-1+n)%n].x) fl=0;
if(a[i].x>a[(i-1+n)%n].x) fl=1;
if(fl&&a[(i-1+n)%n].y>=a[i].y&&a[i].y<a[(i+1)%n].y) ans++;
// cerr<<i<<' '<<fl<<' '<<ans<<endl;
}
for(int i=0;i<p;i++)
{
if(a[i].x<a[(i-1+n)%n].x) fl=0;
if(a[i].x>a[(i-1+n)%n].x) fl=1;
if(fl&&a[(i-1+n)%n].y>=a[i].y&&a[i].y<a[(i+1)%n].y) ans++;
}
cout<<ans;
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3568kb
input:
6 0 0 1 1 2 1 3 0 3 2 0 2
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
8 4 4 0 4 0 2 1 2 2 2 2 0 3 0 4 0
output:
1
result:
ok 1 number(s): "1"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
7 1 0 3 4 0 3 1 2 2 3 1 1 0 2
output:
2
result:
ok 1 number(s): "2"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3556kb
input:
6 0 0 2 0 1 1 4 1 5 0 3 4
output:
2
result:
ok 1 number(s): "2"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
8 0 0 1 0 3 -1 3 0 1 1 4 1 5 0 3 4
output:
2
result:
ok 1 number(s): "2"
Test #6:
score: 0
Accepted
time: 0ms
memory: 3560kb
input:
5 0 0 170 0 140 30 60 30 0 70
output:
1
result:
ok 1 number(s): "1"
Test #7:
score: 0
Accepted
time: 0ms
memory: 3576kb
input:
5 0 0 170 0 140 30 60 30 0 100
output:
1
result:
ok 1 number(s): "1"
Test #8:
score: 0
Accepted
time: 0ms
memory: 3560kb
input:
5 0 0 1 2 1 5 0 2 0 1
output:
1
result:
ok 1 number(s): "1"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
3 0 0 100 0 0 100
output:
1
result:
ok 1 number(s): "1"
Test #10:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
3 200 0 100 100 0 0
output:
1
result:
ok 1 number(s): "1"
Test #11:
score: 0
Accepted
time: 0ms
memory: 3556kb
input:
3 50 50 100 50 100 100
output:
1
result:
ok 1 number(s): "1"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
3 3 0 0 4 0 0
output:
1
result:
ok 1 number(s): "1"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
3 10000 10000 -10000 10000 10000 9999
output:
1
result:
ok 1 number(s): "1"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3512kb
input:
3 10000 10000 -10000 10000 10000 9900
output:
1
result:
ok 1 number(s): "1"
Test #15:
score: 0
Accepted
time: 0ms
memory: 3696kb
input:
3 10000 10000 9999 10000 10000 -10000
output:
1
result:
ok 1 number(s): "1"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3616kb
input:
3 0 0 200 0 100 173
output:
1
result:
ok 1 number(s): "1"
Test #17:
score: 0
Accepted
time: 0ms
memory: 3488kb
input:
3 0 0 200 0 100 1
output:
1
result:
ok 1 number(s): "1"
Test #18:
score: -100
Wrong Answer
time: 0ms
memory: 3512kb
input:
3 -10000 -10000 10000 9999 9999 10000
output:
0
result:
wrong answer 1st numbers differ - expected: '1', found: '0'