1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
//while (clock()<=69*CLOCKS_PER_SEC)
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
  enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "

#define shandom_ruffle random_shuffle

const int nax=1000*1007;

int n, m;

long long czas[nax];

int oj[nax];
int roz[nax];

long long wyn[nax];

long long odj;

vector <int> zap[nax];

vector < pair<int,int> > merg[nax];

int fin(int v)
{
	if (v!=oj[v])
		oj[v]=fin(oj[v]);
	return oj[v];
}

void uni(int a, int b)
{
	if (a>b)
		swap(a, b);
	oj[b]=a;
	roz[a]+=roz[b];
}

void moment(int v, int u, long long w)
{
	if (w>=0 && w<nax)
		merg[w].push_back({v, u});
}

inline long long komb(long long v)
{
	return (v*(v-1))/2;
}

inline long long suf(long long a, long long b)
{
	return (a+b-1)/b;
}

int main()
{
	scanf("%d%d", &n, &m);
	for (int i=1; i<=n; i++)
		scanf("%lld", &czas[i]);
	for (int i=0; i<=n; i++)
	{
		oj[i]=i;
		roz[i]=1;
		odj+=czas[i];
	}
	for (int i=1; i<=m; i++)
	{
		int x;
		scanf("%d", &x);
		zap[x].push_back(i);
	}
	for (int i=0; i<n; i++)
		moment(i, i+1, czas[i+1]-czas[i]);
	long long sl=0;
	long long sk=0;
	sl=odj;
	for (int i=0; i<nax; i++)
	{
		while(!merg[i].empty())
		{
			int x=fin(merg[i].back().first);
			int y=fin(merg[i].back().second);
			merg[i].pop_back();
			if (x==y)
				continue;
			sl-=roz[x]*czas[x];
			sl-=roz[y]*czas[y];
			sk-=komb(roz[x]);
			sk-=komb(roz[y]);
			
			uni(x, y);
			
			sl+=roz[x]*czas[x];
			sk+=komb(roz[x]);
			
			if (x!=0)
			{
				long long dlu=suf(czas[x]-czas[fin(x-1)], roz[fin(x-1)]);
				moment(fin(x-1), x, dlu);
			}
			if (x+roz[x]-1!=n)
			{
				long long dlu=suf(czas[x+roz[x]]-czas[x], roz[x]);
				moment(x, x+roz[x], dlu);
			}
		}
		for (int j : zap[i])
			wyn[j]=sl+sk*i-odj;
	}
	for (int i=1; i<=m; i++)
		printf("%lld\n", wyn[i]);
	return 0;
}