oj.uz

Submission #330924

# Submission time Handle Problem Language Result Execution time Memory
330924 2020-11-26T21:59:21 Z ZwariowanyMarcin Star triangles (IZhO11_triangle) C++14
100 / 100
 397 ms 10092 KB 
#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define sz(x) (int)x.size()

using ll = long long;
using namespace std;

const int N = 1 << 20;

int n, x[N], y[N];
ll res;		
map<int, int> dx, dy;

int main() {
	scanf("%d", &n);
	for (int i = 0; i < n; ++i) {
		scanf("%d%d", x + i, y + i);
		dx[x[i]]++;
		dy[y[i]]++;
	}
	for (int i = 0; i < n; ++i)
		res += 1LL * (dx[x[i]] - 1) * (dy[y[i]] - 1);
	printf("%lld\n", res);
	return 0;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
triangle.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   19 |   scanf("%d%d", x + i, y + i);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 8 ms 1004 KB Output is correct
13 Correct 10 ms 1132 KB Output is correct
14 Correct 11 ms 1388 KB Output is correct
15 Correct 141 ms 6252 KB Output is correct
16 Correct 162 ms 6508 KB Output is correct
17 Correct 136 ms 6252 KB Output is correct
18 Correct 132 ms 6252 KB Output is correct
19 Correct 389 ms 9836 KB Output is correct
20 Correct 262 ms 9324 KB Output is correct
21 Correct 397 ms 10092 KB Output is correct
22 Correct 395 ms 9964 KB Output is correct