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#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
int a, b, c, tab[1000001], roz[1000001], d, w;
int main () {
	ios_base::sync_with_stdio(0);
	cin >> a >> b;
	for (int i = 0; i < a; i++) {
		cin >> tab[i];
		if (i > 0) roz[i-1] = tab[i] - tab[i-1];
	}
	for (int i = 0; i < b; i++) {
		cin >> c;
		for (int j = 0; j < a; j++) {
			if (d+c <= tab[j]) {
				d = tab[j];
			}
			else {
				w += d+c-tab[j];
				d = d + c;
			}
		}
		cout << w << endl;
		w = 0;
		d = 0;
	}
}