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Submission #521900

# Submission time Handle Problem Language Result Execution time Memory
521900 2022-02-03T12:01:50 Z Ronin13 Star triangles (IZhO11_triangle) C++14
100 / 100
 305 ms 13340 KB 
#include<bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define epb emplace_back
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define inf 1e9+1
#define linf 1e18+1
using namespace std;
int dp[100001][101];
map<ll,ll>usedx,usedy;
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int n;cin>>n;
    int x[n+1],y[n+1];
    for(int i=1;i<=n;i++)cin>>x[i]>>y[i];
    for(int i=1;i<=n;i++){
        usedx[x[i]]++;
        usedy[y[i]]++;
    }
    ll ans=0;
    for(int i=1;i<=n;i++){
        ans+=(usedx[x[i]]-1)*(usedy[y[i]]-1);
    }
    cout<<ans;
    return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 0 ms 328 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 6 ms 1100 KB Output is correct
13 Correct 5 ms 1120 KB Output is correct
14 Correct 9 ms 1576 KB Output is correct
15 Correct 95 ms 7108 KB Output is correct
16 Correct 102 ms 7412 KB Output is correct
17 Correct 98 ms 7136 KB Output is correct
18 Correct 110 ms 7108 KB Output is correct
19 Correct 305 ms 12576 KB Output is correct
20 Correct 206 ms 10300 KB Output is correct
21 Correct 276 ms 13140 KB Output is correct
22 Correct 292 ms 13340 KB Output is correct