oj.uz

Submission #290869

# Submission time Handle Problem Language Result Execution time Memory
290869 2020-09-04T14:09:05 Z crossing0ver W (RMI18_w) C++17
0 / 100
 72 ms 5496 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define vi vector<int>
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
int cnt[1000005],arr[300005];
main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	for (int i = 0; i< n; i++) {
		cin >> arr[i];
		cnt[arr[i]]++;
	}
	sort(arr,arr+n);
	int a[2] = {};
	int c= 0;
	ll ans = 1;
	for (int i = 1; i <= 1000000; i++) {
		if (cnt[i]) {
			c++;
			ans*=(cnt[i] - 1);
		}
	}
	cout << ans*(c/2);
		

}

Compilation message

w.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main() {
      |      ^
w.cpp: In function 'int main()':
w.cpp:21:6: warning: unused variable 'a' [-Wunused-variable]
   21 |  int a[2] = {};
      |      ^

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Incorrect 2 ms 384 KB Output isn't correct
3 Incorrect 8 ms 512 KB Output isn't correct
4 Incorrect 29 ms 1536 KB Output isn't correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Output isn't correct
2 Incorrect 3 ms 384 KB Output isn't correct
3 Incorrect 11 ms 4352 KB Output isn't correct
4 Incorrect 25 ms 4608 KB Output isn't correct
5 Incorrect 48 ms 3064 KB Output isn't correct
6 Incorrect 72 ms 5496 KB Output isn't correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 384 KB Output isn't correct
2 Incorrect 2 ms 384 KB Output isn't correct
3 Incorrect 3 ms 384 KB Output isn't correct
4 Incorrect 2 ms 384 KB Output isn't correct
5 Incorrect 2 ms 384 KB Output isn't correct
6 Incorrect 4 ms 384 KB Output isn't correct
7 Incorrect 4 ms 768 KB Output isn't correct
8 Incorrect 19 ms 1152 KB Output isn't correct
9 Incorrect 37 ms 1152 KB Output isn't correct
10 Incorrect 70 ms 5368 KB Output isn't correct