#include <bits/stdc++.h>
#define ll long long
#define int long long
#define pb push_back
#define F first
#define S second
using namespace std;
const long long N = 2e5+10;
const long long mod = 1e9+7;
const long long inf = 1e18;
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int n,res = 0;
cin >> n;
vector<int>a(n);
for(int i=0;i<n;i++) cin >> a[i];
map<int,bool>mp;
for(int i=0;i<n;i++) {
if(!mp[a[i]]) res++;
mp[a[i]] = false;
mp[a[i]-1] = true;
}
cout << res;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
2 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
3 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
4 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
5 |
Incorrect |
189 ms |
6644 KB |
Output isn't correct |
6 |
Incorrect |
182 ms |
7260 KB |
Output isn't correct |
7 |
Incorrect |
141 ms |
6104 KB |
Output isn't correct |
8 |
Incorrect |
149 ms |
6028 KB |
Output isn't correct |
9 |
Incorrect |
179 ms |
6376 KB |
Output isn't correct |
10 |
Incorrect |
160 ms |
6532 KB |
Output isn't correct |