#include<bits/stdc++.h>
using namespace std;
main(){
int n,k;
cin>>n>>k;
vector<int>v(n);
for(auto &it:v)cin>>it;
int i=0,j=0,s=0,cnt=0;
while(j<n){
s+=v[j];
if(s<=k){
cnt+=j-i+1;
j++;
}
else{
s-=v[i];
s-=v[j];
i++;
}
}
cout<<cnt<<"\n";
}
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