1917C - Watering an Array - CodeForces Solution

#include <iostream>
#include <bits/stdc++.h>
// #include "utilities.cpp"
using namespace std;
#define int long long
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define forn(i, x, n) for (int i = x; i < n; i++)
#define vi vector<int>
#define vpp vector<pair<int,int>>
#define vs vector<string>
#define vll vector<long long>
#define ss second
#define ff first
int row[] = {1,0,-1,0};
int col[] = {0,1,0,-1};
const int mod = 1e9 + 7;


void solve(){

    int n,k,d;
    cin>>n>>k>>d;

    vi a(n),v(k);
    forn(i,0,n) cin>>a[i];
    forn(i,0,k) cin>>v[i];

    int i = 0;
    int ans = 0;

    while(i < min(d, 3*n)){

        int same = 0;
        for(int j=0; j<n; j++){
            same += (a[j] == (j+1));
        }
        ans = max(ans, same+((d-(i+1))/2));

        int val = v[i%k];
        for(int j=0; j<val; j++) a[j]++;
        i++;
        
    }
    cout<<ans<<'\n';
}


signed main(){

    std::ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int t = 1;
    // sieve();
    cin >> t;
    while (t--) solve();
    return 0;

}