oj.uz

Submission #314264

# Submission time Handle Problem Language Result Execution time Memory
314264 2020-10-19T09:22:35 Z Trickster Star triangles (IZhO11_triangle) C++14
100 / 100
 958 ms 15612 KB 
#include <algorithm>
#include <string.h>
#include <iostream>
#include <stdio.h>
#include <vector>
#include <queue>
#include <cmath>
#include <set>
#include <map>

using namespace std;

#define N 300010
#define ff first
#define ss second
#define ll long long
#define pb push_back
#define mod 1000000007
#define pii pair <ll, ll>
#define sz(a) ll(a.size())
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
ll bigmod(ll a,ll e) {if(e==0)return 1;ll x=bigmod(a*a%mod,e>>1);return e&1?x*a%mod:x;}

pii p[N];
ll n, x, y;
map <ll, ll> R, C;

int main()
{
    cin >> n;

    ll ans = 0;
    for(ll i = 1; i <= n; i++) {
        cin >> x >> y;

        R[x]++, C[y]++;
        p[i] = {x, y};
    }
    
    for(ll i = 1; i <= n; i++) ans += (R[p[i].ff] - 1) * (C[p[i].ss] - 1);

    cout << ans;
}

Compilation message

triangle.cpp:22: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
   22 | #pragma GCC optimization ("O3")
      | 
triangle.cpp:23: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
   23 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 1 ms 376 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 19 ms 1280 KB Output is correct
13 Correct 22 ms 1280 KB Output is correct
14 Correct 28 ms 1792 KB Output is correct
15 Correct 322 ms 7928 KB Output is correct
16 Correct 358 ms 8440 KB Output is correct
17 Correct 323 ms 8056 KB Output is correct
18 Correct 313 ms 7928 KB Output is correct
19 Correct 890 ms 14780 KB Output is correct
20 Correct 636 ms 11896 KB Output is correct
21 Correct 948 ms 15612 KB Output is correct
22 Correct 958 ms 15572 KB Output is correct