Submission #211465

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
211465	2020-03-20 12:27:06	jzh	Telefoni (COCI17_telefoni)	C++14	8 / 80	22 ms	3328 KiB

telefoni

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#include <bits/stdc++.h>
#pragma O3
using namespace std;
typedef long long ll;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n,k,i,sum=0,x,ans=0;
    cin>>n>>k;
    ll arr[n];
    for (i=0;i<n;i++){
        cin>>arr[i];
        x=arr[i];
        sum+=x;
        if (i>=k){
            sum-=arr[i-k];
        }
        if (i>=k-1){
            if (sum==0){
                ans++;
                arr[i]=1;
            }
        }
    }
    cout<<ans<<'\n';
 
}
 
 
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Compilation message (stderr)

telefoni.cpp:2:0: warning: ignoring #pragma O3  [-Wunknown-pragmas]
 #pragma O3

• Subtask 1: 8 / 80