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#include<bits/stdc++.h>
using namespace std;
#define f first
#define s second
#define PB push_back
typedef long long ll;
typedef long double ld;
#define REP(x,y) for(int x=0;x<(y);x++)
#define ROF(x,y) for(int x=(y);x>0;x--)
#define FOR(x,z,y) for(int x=(z);x<(y);x++)
#define INT(x) int x;scanf("%d",&x)
#define LL(x) ll x;scanf("%lld",&x)
#define CZ(x) char x;scanf(" %c",&x)
typedef pair<int,int> pii;
typedef pair<int,pii> piii;

ll t[200005];

int main(){
    INT(p);INT(k);
    REP(i,p){
        scanf("%lld",&t[i]);
    }
    while(k--){
        LL(x);
        ll w=0,wyn=0;
        REP(i,p){
            if(w+x<=t[i])w=t[i];
            else{
                wyn+=w+x-t[i];
                w+=x;
            }
        }
        printf("%lld\n",wyn);
    }
}