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Submission #1112585

# Submission time Handle Problem Language Result Execution time Memory
1112585 2024-11-14T11:05:52 Z Chinguun Star triangles (IZhO11_triangle) C++14
100 / 100
 391 ms 15432 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define ff first
#define ss second
#define pb push_back

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<pii> vii;

int n, x, y, ans;
map <int, vi> mp;
map <int, pii> p;

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);

	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> x >> y;
		mp[x].pb (y);
		p[y].ff++;
	}
	for (auto it : mp) {
		vi v = it.ss;
		for (int i = 0; i < v.size (); i++) {
			ans += i * (p[v[i]].ss + p[v[i]].ff - 1);
			ans += (v.size () - i - 1) * (p[v[i]].ss + p[v[i]].ff - 1);
			p[v[i]].ff--; p[v[i]].ss++;
		}
	}
	cout << ans;
	return 0;
}

Compilation message

triangle.cpp: In function 'int main()':
triangle.cpp:29:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int i = 0; i < v.size (); i++) {
      |                   ~~^~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 508 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 632 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 9 ms 1368 KB Output is correct
13 Correct 7 ms 1616 KB Output is correct
14 Correct 13 ms 2128 KB Output is correct
15 Correct 130 ms 6436 KB Output is correct
16 Correct 143 ms 8288 KB Output is correct
17 Correct 127 ms 6476 KB Output is correct
18 Correct 129 ms 8520 KB Output is correct
19 Correct 375 ms 14452 KB Output is correct
20 Correct 241 ms 8344 KB Output is correct
21 Correct 391 ms 15432 KB Output is correct
22 Correct 362 ms 15432 KB Output is correct