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| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #313911 | #7730. Convex Checker | Hqwq | Compile Error | / | / | C++14 | 1.7kb | 2024-01-25 10:00:50 | 2024-01-25 10:00:50 |
Judging History
你现在查看的是最新测评结果
- [2024-07-04 19:27:17]
- hack成功，自动添加数据
- (/hack/727)
- [2024-07-04 19:17:30]
- hack成功，自动添加数据
- (/hack/726)
- [2024-01-25 10:00:50]
- 评测
- 测评结果：Compile Error
- 用时：0ms
- 内存：0kb
- [2024-01-25 10:00:50]
- 提交
answer
#include<bits/stdc++.h>
using namespace std;
int n,cnt=0;
struct point{
int x,y;
}p[200010],v[200010],q[200010];
bool cmp(point x,point y){
if (x.x!=y.x) return x.x<y.x;
return x.y<y.y;
}
bool check(point x,point y,point z){
int a,b,c,d;
a=y.x-x.x;
b=y.y-x.y;
c=z.x-y.x;
d=z.y-y.y;
if (a*d-b*c>0) return 1;
return 0;
}
void tb(){
v[++cnt]=p[1];
v[++cnt]=p[2];
for (int i=3;i<=n;i++){
while(!check(v[cnt-1],v[cnt],p[i]) && cnt>1){
cnt--;
}
v[++cnt]=p[i];
}
int temp=cnt;
v[++cnt]=p[n-1];
for (int i=n-2;i>=1;i--){
while(!check(v[cnt-1],v[cnt],p[i]) && cnt>temp){
cnt--;
}
v[++cnt]=p[i];
}
cnt--;
}
int main(){
scanf("%d",&n);
for (int i=1;i<=n;i++){
int x,y;
scanf("%d %d",&p[i].x,&p[i].y);
q[i]=p[i];
}
sort(q+1,q+1+n,cmp);
tb();
int pp=1;
for (int i=2;i<=q;i++){
if (q[i]==q[i-1]) pp=0;
}
if (cnt!=n) pp=0;
// else {
// int p1=1,p2=1;
// int i=1,j;
// for (i=1;i<=n;i++) if (q[1].x==v[i].x && q[1].y==v[i].y) break;
// j=1;
// while(j<=n){
// if (v[i].x!=q[j].x || v[i].y!=q[j].y){
// p1=0;
// break;
// }
// i=i%n+1;
// j=j+1;
// }
// for (i=1;i<=n;i++) if (q[1].x==v[i].x && q[1].y==v[i].y) break;
// j=1;
// while(j<=n){
// if (v[i].x!=q[j].x || v[i].y!=q[j].y){
// p2=0;
// break;
// }
// i=i-1;
// if (i<=0) i+=n;
// j=j+1;
// }
// pp=p1|p2;
// }
if (pp) printf("Yes\n");
else printf("No\n");
}
詳細信息
answer.code: In function ‘int main()’:
answer.code:54:19: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
54 | for (int i=2;i<=q;i++){
| ~^~~
answer.code:55:17: error: no match for ‘operator==’ (operand types are ‘point’ and ‘point’)
55 | if (q[i]==q[i-1]) pp=0;
| ~~~~^~~~~~~~
| | |
| point point
In file included from /usr/include/c++/13/regex:68,
from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:181,
from answer.code:1:
/usr/include/c++/13/bits/regex.h:1103:5: note: candidate: ‘template<class _BiIter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const sub_match<_BiIter>&)’
1103 | operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1103:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1199:5: note: candidate: ‘template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const sub_match<_BiIter>&)’
1199 | operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1199:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1274:5: note: candidate: ‘template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(const sub_match<_BiIter>&, __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&)’
1274 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1274:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1366:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type*, const sub_match<_BiIter>&)’
1366 | operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1366:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1441:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type*)’
1441 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1441:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1534:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator==(const typename std::iterator_traits<_Iter>::value_type&, const sub_match<_BiIter>&)’
1534 | operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1534:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:1613:5: note: candidate: ‘template<class _Bi_iter> bool std::__cxx11::operator==(const sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&)’
1613 | operator==(const sub_match<_Bi_iter>& __lhs,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:1613:5: note: template argument deduction/substitution failed:
answer.code:55:24: note: ‘point’ is not derived from ‘const std::__cxx11::sub_match<_BiIter>’
55 | if (q[i]==q[i-1]) pp=0;
| ^
/usr/include/c++/13/bits/regex.h:2186:5: note: candidate: ‘template<class _Bi_iter, class _Alloc> bool std::__cxx11::operator==(const match_results<_BiIter, _Alloc>&, const match_results<_BiIter, _Alloc>&)’
2186 | operator==(const match_results<_Bi_iter, _Alloc>& __m1,
| ^~~~~~~~
/usr/include/c++/13/bits/regex.h:2186:5: note: template argument deduction/substitution failed:
answer.code:55:24...