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;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define int long long
#define all(x) x.begin(), x.end()
#define endl '\n'
const int N=200005;
const int INF=1e18;
int32_t main() {
LCBorz;
int n;cin>>n;
vector<int> v(n);
for(int i=0;i<n;i++){
cin>>v[i];
}
int last=0,j=-1,now=0,ans=0;
for(int i=0;i<n;i++){
now+=v[i];
if(now>=last){
while(j+1<n){
if(now-v[j+1]>=last+v[j+1]){
j++;
now-=v[j];
last+=v[j];
}
else break;
}
ans++;
last=now;
now=0;
j=i;
}
}
cout<<ans<<endl;
return 0;
}
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