This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/*
ID: agageld1
LANG: C++17
TASK:
*/
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define N 600005
#define ff first
#define ss second
#define pb push_back
#define sz(s) (int)s.size()
ll n, t, T, a[N];
string s, g, h;
deque <ll> v;
void solve(int x) {
for(int i = t; i >= 1; i--) {
if(x >= v[sz(v)-1]) break;
x += a[i];
v[sz(v)-1] -= a[i];
if(!v[sz(v)-1]) v.pop_back();
else if(sz(v) > 1 && v[sz(v)-1] < v[sz(v)-2]) {
// x+=v[sz(v)-1];
v[sz(v)-2] += v[sz(v)-1];
v.pop_back();
}
}
v.pb(x);
}
int main () {
ios::sync_with_stdio(0);cin.tie(0);
cin >> n;
for(int i = 1; i <= n; i++) {
cin >> a[i];
}
v.pb(a[1]);
for(int i = 2; i <= n; i++) {
t = i-1;
solve(a[i]);
}
cout << sz(v) << '\n';
}
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