VJwMuW - Online C++ Compiler & Debugging Tool

#include <iostream>
using namespace std;
#include<bits/stdc++.h>

int main() {
	// your code goes here
	vector<int>arr = {1,2,2,1,2};
	int i = 0 ; int j = 0 ; int k = 4;
	int n = arr.size(); int sum  = 0 ; int count = 0 ;

	while(i<n&&j<n){

		sum+=arr[j];
		while(sum>k){
			sum-=arr[i];
			i++;
		}
		count+=j-i+1;
		j++;

	}
	cout<<count ;

}