# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
954943 |
2024-03-28T23:26:46 Z |
hyakup |
Triangles (CEOI18_tri) |
C++17 |
|
1 ms |
600 KB |
#include <bits/stdc++.h>
#include "trilib.h"
#include <random>
using namespace std;
// int get_n(){
// cout << "N: " << endl;
// int x; cin >> x; return x;
// }
//
// bool is_clockwise( int a, int b, int c ){
// cout << a << " " << b << " "<< c << endl;
// int x; cin >> x; return x;
// }
//
// void give_answer( int x ){ cout << "RESP: " << x << endl; }
void ordena( vector<int>& v, vector<int>& resp ){
if( v.size() == 1 ) return;
vector<int> l, r;
l.push_back(v[0]); r.push_back(v[0]);
for( int i = 2; i < v.size(); i++ ){
if( is_clockwise( v[0], v[1], v[i] ) ) r.push_back(v[i]);
else l.push_back(v[i]);
}
ordena( l, resp ); resp.push_back(v[1]); ordena( r, resp );
}
int main(){
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n = get_n();
vector<int> v, resp;
for( int i = 1; i <= n; i++ ) v.push_back(i);
shuffle( v.begin(), v.end(), rng );
ordena(v, resp);
vector<int> hull; hull.push_back(v[0]);
for( int cur : resp ){
while( hull.size() >= 2 && !is_clockwise( hull[hull.size() - 2], hull.back(), cur ) ) hull.pop_back();
hull.push_back(cur);
}
for( int i = 0; i < hull.size() - 1; i++ ){
if( !is_clockwise(hull[i], hull[i + 1], hull.back()) ) continue;
give_answer((int)hull.size() - i); break;
}
}
Compilation message
tri.cpp: In function 'void ordena(std::vector<int>&, std::vector<int>&)':
tri.cpp:22:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
22 | for( int i = 2; i < v.size(); i++ ){
| ~~^~~~~~~~~~
tri.cpp: In function 'int main()':
tri.cpp:41:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
41 | for( int i = 0; i < hull.size() - 1; i++ ){
| ~~^~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Incorrect |
1 ms |
500 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Incorrect |
1 ms |
500 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Incorrect |
1 ms |
500 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
440 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
420 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
600 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Incorrect |
1 ms |
500 KB |
Output isn't correct |
7 |
Halted |
0 ms |
0 KB |
- |