#include <bits/stdc++.h>
using namespace std;
const int N=1e5+37;
// subtask all are vertical
vector<array<int, 2>> a[N];
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
int n; cin>>n;
vector<array<int, 2>> node(2*n+1);
vector<int> x, y;
map<int, int> cx, cy;
for(int i=1; i<=n*2; i+=2)
{
cin>>node[i][0]>>node[i][1];
cin>>node[i+1][0]>>node[i+1][1];
x.push_back(node[i][0]);
x.push_back(node[i+1][0]);
y.push_back(node[i][1]);
y.push_back(node[i+1][1]);
}
sort(x.begin(), x.end());
sort(y.begin(), y.end());
int cnt=1;
for(auto i: x)
{
if(!cx.count(i)) cx[i]=cnt, cnt++;
}
cnt=1;
for(auto i: y)
{
if(!cy.count(i)) cy[i]=cnt, cnt++;
}
for(int i=1; i<=2*n; i++)
{
a[cy[node[i][1]]].push_back({cx[node[i][0]], i});
}
for(int i=0; i<N; i++)
{
if(a[i].size())
{
sort(a[i].begin(), a[i].end());
}
}
vector<array<int, 4>> ans;
for(int i=1; i<N; i++)
{
if(a[i].size()){
for(int l=1; l<a[i].size()-1; l+=2)
{
int v=a[i][l][1];
int u=a[i][l+1][1];
ans.push_back({node[v][0], node[v][1], node[u][0], node[u][1]});
}
if(!a[i+1].size()) break;
int v=a[i][0][1];
int u=a[i+1][0][1];
ans.push_back({node[v][0], node[v][1], node[u][0], node[u][1]});
}
}
for(auto i: ans) cout<<i[0]<<" "<<i[1]<<" "<<i[2]<<" "<<i[3]<<"\n";
}
Compilation message
roads.cpp: In function 'int main()':
roads.cpp:64:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
64 | for(int l=1; l<a[i].size()-1; l+=2)
| ~^~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
2 ms |
2644 KB |
Expected EOF |
2 |
Halted |
0 ms |
0 KB |
- |