#include <bits/stdc++.h>
using namespace std;
int n, a[1000000];
long long f[1000000];
void doc()
{
cin>>n;
for (int i=1;i<=n;i++) cin>>a[i];
}
void tinh_f()
{
f[0] = 0;
for (int i=1;i<=n;i++) f[i] = f[i-1] + a[i];
}
void xuly()
{
int dem = 0;
for (int j=2;j<=n;j++)
for (int i=1;i<=j-1;i++)
if (f[i]== f[n] -f[j-1]) dem++;
printf("%d",dem);
}
int main()
{
doc();
tinh_f();
xuly();
}
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