oj.uz

Submission #481518

# Submission time Handle Problem Language Result Execution time Memory
481518 2021-10-21T05:49:40 Z Kalashnikov Star triangles (IZhO11_triangle) C++17
0 / 100
 270 ms 39744 KB 
#include <bits/stdc++.h>
 
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second
 
using namespace std;
using ll = long long;
 
const int N = 2e5+5 , inf = 2e9 + 7;
const ll INF = 1e18 ,   mod = 1e9+7 , P = 6547;

int x[N] , y[N];

void solve(int tc) {
	int n;
	cin >> n;
	map<int,int> cntx , cnty;
	map<pair<int,int>,int> cnt;
	for(int i= 1; i <= n; i ++) {
		cin >> x[i] >> y[i];
		cntx[x[i]] ++;
		cnty[y[i]] ++;
		cnt[{x[i] , y[i]}] ++;
	}
	ll ans = 0;
	for(int i = 1; i <= n; i ++) {
		int X = cntx[x[i]] - cnt[{x[i] , y[i]}];
		int Y = cnty[y[i]] - cnt[{x[i] , y[i]}];
		ans += 1ll*X*Y*cnt[{x[i] , y[i]}];
	}
	cout << ans;
}
/*
*/
main() {
	file("triangles");
    ios;
    int tt = 1 , tc = 0;
    // cin >> tt;
    while(tt --) {
        solve(++tc);
    }
    return 0;
}

Compilation message

triangle.cpp:38:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   38 | main() {
      | ^~~~
triangle.cpp: In function 'int main()':
triangle.cpp:4:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    4 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
triangle.cpp:39:2: note: in expansion of macro 'file'
   39 |  file("triangles");
      |  ^~~~
triangle.cpp:4:77: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    4 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
triangle.cpp:39:2: note: in expansion of macro 'file'
   39 |  file("triangles");
      |  ^~~~

Subtask #1
0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 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 11 ms 1652 KB Output is correct
13 Correct 10 ms 1716 KB Output is correct
14 Correct 15 ms 1996 KB Output is correct
15 Correct 216 ms 12428 KB Output is correct
16 Correct 245 ms 13296 KB Output is correct
17 Correct 223 ms 12356 KB Output is correct
18 Correct 215 ms 12436 KB Output is correct
19 Runtime error 270 ms 39744 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -