oj.uz

Submission #947464

# Submission time Handle Problem Language Result Execution time Memory
947464 2024-03-16T08:35:25 Z vjudge306 Star triangles (IZhO11_triangle) C++14
100 / 100
 509 ms 33528 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update>
#define nn "\n"
#define x_x ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define intt int _; cin >> _; while (_--)
#define emp push_back
#define mod 1000000007
#define all(v) v.begin(), v.end()
#define ld long double
#define A first
#define B second
typedef long long ll;
const ld eps = 1e-27;
// diff between decimals 0.000000001 mt19937 mt(time(nullptr));

int main() {

    x_x
int n; cin>>n; vector<pair<int,int>>ar;
map<pair<int,int>,int>mp; map<int,ll>r,c;
for(int i=0,x,y; i<n; i++) {
 cin>>x>>y; if (mp.find({x,y})==mp.end()) {mp[{x,y}]=1, r[x]++, c[y]++;
ar.emp({x,y});}
}
ll ans=0;
for(int i=0; i<ar.size(); i++) {
ans+=((r[ar[i].A]-1)*(c[ar[i].B]-1));
}
cout<<ans;
    return 0;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:30:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 | for(int i=0; i<ar.size(); i++) {
      |              ~^~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 8 ms 1884 KB Output is correct
13 Correct 8 ms 1884 KB Output is correct
14 Correct 12 ms 2548 KB Output is correct
15 Correct 130 ms 13432 KB Output is correct
16 Correct 182 ms 14280 KB Output is correct
17 Correct 145 ms 13508 KB Output is correct
18 Correct 162 ms 13544 KB Output is correct
19 Correct 492 ms 31932 KB Output is correct
20 Correct 412 ms 22716 KB Output is correct
21 Correct 509 ms 33528 KB Output is correct
22 Correct 498 ms 32492 KB Output is correct