Important Lecture (Талдоо)

#include <iostream>
#include <vector>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    int n, k, x, i, res=0, curSleep=0;
    // Reading input
    cin>>n>>k>>x;
    vector<int> b(n), c(n);
    for(i=0;i<n;++i){
        cin>>b[i];
    }
    for(i=0;i<n;++i){
        cin>>c[i];
    }
    for(i=0;i<n;++i){
        // Checking if you currently a sleep
        if(k >= x){
            // Updating how long have slept and how long you have slept in your last period
            ++res;
            ++curSleep;
            // Cheking if you will wake up
            if(c[i] > curSleep){
                // Updating sleepness and length of last period
                k = 0;
                curSleep = 0;
            }
        }else{
            // Updating current sleepness 
            k += b[i];
        }
    }
    // Printing answer
    cout<<res<<endl;
    return 0;
}