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#include<bits/stdc++.h>
#define PII pair<int,int>
#define f first
#define s second
#define VI vector<int>
#define LL long long
#define MP make_pair
#define LD long double
#define PB push_back
#define ALL(V) V.begin(),V.end()
#define abs(x) max((x),-(x))
#define PDD pair<LD,LD> 
#define VPII vector< PII > 
#define siz(V) ((int)V.size())
#define FOR(x, b, e)  for(int x=b;x<=(e);x++)
#define FORD(x, b, e) for(int x=b;x>=(e);x--)
#define REP(x, n)     for(int x=0;x<(n);x++)
#define mini(a,b) a=min(a,b)
#define maxi(a,b) a=max(a,b)
using namespace std;
int n,a,b,c,d,k,m,q,z;
const int MXN=5e5+5;
const int BASE=1<<19;
LL in[BASE+3];
struct seg
	{
	LL sumpod=0;
	LL add=0;//stale
	LL czas=0;
	LL mxpod=0;
	LL mxadd=0;//stale
	LL rowne=-1;
	LL rowneczas=0;
	
	void print(int id)
		{
		printf("id: %d sumpod: %lld czas: %lld mxpod: %lld rowne: %lld rowneczas: %lld\n",id,sumpod,czas,mxpod,rowne,rowneczas);
		}	
	};
seg t[BASE*2+3];

void upd(int id,int p,int k,LL x,LL time)
	{
	t[id].sumpod=(k-p+1)*x;
	t[id].czas=time;
	t[id].mxpod=x;
	t[id].rowne=x;
	t[id].rowneczas=time;
	}

void shift(int id,int p,int k)
	{
	if(t[id].rowne==-1)return;	
	int mid=(p+k)/2;
	upd(id*2,p,mid,t[id].rowne,t[id].rowneczas);
	upd(id*2+1,mid+1,k,t[id].rowne,t[id].rowneczas);
	t[id].rowne=-1;
	}
void doczasu(int id,LL time)
	{
	LL delta=time-t[id].czas;
	t[id].sumpod+=t[id].add*delta;
	t[id].czas=time;
	t[id].mxpod+=t[id].mxadd*delta;
	}
void calc(int id)
	{
	LL ttt=max(t[id*2].czas,t[id*2+1].czas);
	doczasu(id*2,ttt);
	doczasu(id*2+1,ttt);
	t[id].sumpod=t[id*2].sumpod+t[id*2+1].sumpod;	
	t[id].mxpod=max(t[id*2].mxpod,t[id*2+1].mxpod);
	t[id].czas=ttt;
	}
void insertequal(int a,int b,LL x,LL time,int p=1,int k=BASE,int id=1)
	{
	if(b<p || k<a)return;
	if(a<=p && k<=b)
		{
		upd(id,p,k,x,time);
		return;
		}
	shift(id,p,k);
	int mid=(p+k)/2;
	insertequal(a,b,x,time,p,mid,id*2);
	insertequal(a,b,x,time,mid+1,k,id*2+1);
	
	calc(id);
	}
LL querypoint(LL x,LL time,int p=1,int k=BASE,int id=1)//pierwszy większy
	{
	if(p==k)return p;
	shift(id,p,k);
	doczasu(id*2,time);
		
	int mid=(p+k)/2;	
	if(t[id*2].mxpod>x)return querypoint(x,time,p,mid,id*2);
	return querypoint(x,time,mid+1,k,id*2+1);
	}
LL querysum(int a,int b,LL time,int p=1,int k=BASE,int id=1)
	{
	if(b<p || k<a)return 0;
	doczasu(id,time);
	if(a<=p&&k<=b)
		return t[id].sumpod;
	shift(id,p,k);
	int mid=(p+k)/2;
	return 
		querysum(a,b,time,p,mid,id*2) +
		querysum(a,b,time,mid+1,k,id*2+1);
	}

void inittree(int p=1,int k=BASE,int id=1)
	{
	if(p==k)
		{
		t[id].add = t[id].mxadd = in[p];
		return;
		}
	int mid=(p+k)/2;
	inittree(p,mid,id*2);
	inittree(mid+1,k,id*2+1);
	t[id].add = t[id*2].add + t[id*2+1].add;
	t[id].mxadd = max(t[id*2].mxadd, t[id*2+1].mxadd);
	}
	
void readLL(LL &a)
  {
  char ch=0;
  a=0;
  while(ch<33)ch=getchar_unlocked();
  do
    {
    a=(a<<1)+(a<<3)+ch-'0';
    ch=getchar_unlocked();
    }
  while(ch>33);
  }
void printLL(LL a,char b)
  {
  if(a==0){putchar_unlocked('0');putchar_unlocked(b);return;}
  char buf[20];
  char x=0;
  while(a)
    {
    buf[x++]=a%10;
    a/=10;
    }
  while(x)
    putchar_unlocked(buf[--x]+48);
  putchar_unlocked(b);
  }
	
main()
{
scanf("%d%d",&n,&m);
FOR(i,1,n)
	{
	readLL(in[i]);
	}
sort(in+1,in+n+1);
inittree();
LL time,b;
FOR(i,1,m)
	{
	readLL(time);
	readLL(b);
	int punkt=querypoint(b,time);
	if(punkt>n)
		{
		printLL(0,'\n');
		continue;
		}
	LL r=querysum(punkt,n,time);
	LL res=r-(n-punkt+1)*b;
	printLL(res,'\n');
	insertequal(punkt,n,b,time);
	}
}