Thông tin
chả có cái mọe j cả
include<bits/stdc++.h>
using namespace std; long long a[1002001],b[1002001],n,i,j,k,t,l,r,mid,res; int main (){ cin>>n>>k; for(i=1; i<=n; i++){ cin>>a[i]; b[i]=b[i-1]+a[i]; } i=n; for(i=n; i>=1; i--){ l=1; r=i; res=0; while(l<=r){ mid=(l+r)/2; if(b[i]-b[mid-1]>=k){ res=mid; l=mid+1; } else r=mid-1; } t+=res; } cout<<t; return 0; }