# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
227628 | bensonlzl | Baloni (COCI15_baloni) | C++14 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int N, H[1000005], arrow[1000005], tot = 0;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> N;
for (int i = 1; i <= N; ++i){
cin >> H[i];
if (!arrow[H[i]]){
tot++;
arrow[H[i]-1]++;
}
else{
arrow[H[i]]--;
arrow[H[i]-1]++
}
}
cout << tot << '\n';
}