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#include <bits/stdc++.h>
#define MP make_pair
#define PB push_back
#define int long long
#define st first
#define nd second
#define rd third
#define FOR(i, a, b) for(int i =(a); i <=(b); ++i)
#define RE(i, n) FOR(i, 1, n)
#define FORD(i, a, b) for(int i = (a); i >= (b); --i)
#define REP(i, n) for(int i = 0;i <(n); ++i)
#define VAR(v, i) __typeof(i) v=(i)
#define FORE(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) ((int)(x).size())
#ifdef LOCAL
#define debug(x) {cerr <<#x<<" = " <<x<<"\n"; }
#define debug2(x, y) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<"\n";}
#define debug3(x, y, z) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<", "<<#z<<" = "<<z<<"\n";}
#define debug4(x, y, z, t) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<", "<<#z<<" = "<<z<<", "<<#t <<" = " <<t<<"\n";}
#define debugv(x) {{cerr <<#x <<" = "; FORE(itt, (x)) cerr <<*itt <<", "; cerr <<"\n"; }}
#else
#define debug(x)
#define debug2(x, y)
#define debug3(x, y, z)
#define debug4(x,y,z,t)
#define debugv(x)
#define cerr if(0)cout
#endif
#define make(type, x) type x; cin>>x;
#define make2(type, x, y) type x, y; cin>>x>>y;
#define make3(type, x, y, z) type x, y, z; cin>>x>>y>>z;
#define make4(type, x, y, z, t) type x, y, z, t; cin>>x>>y>>z>>t;
#define next ____next
#define prev ____prev
#define left ____left
#define hash ____hash
using namespace std;
typedef long long ll;
typedef long double LD;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VLL;
typedef vector<pair<int, int> > VPII;
typedef vector<pair<ll, ll> > VPLL;

template<class C> void mini(C&a4, C b4){a4=min(a4, b4); }
template<class C> void maxi(C&a4, C b4){a4=max(a4, b4); }
template<class T1, class T2>
ostream& operator<< (ostream &out, pair<T1, T2> pair) { return out << "(" << pair.first << ", " << pair.second << ")";}
template<class A, class B, class C> struct Triple { A first; B second; C third;
  bool operator<(const Triple& t) const { if (st != t.st) return st < t.st; if (nd != t.nd) return nd < t.nd; return rd < t.rd; } };
template<class T> void ResizeVec(T&, vector<int>) {}
template<class T> void ResizeVec(vector<T>& vec, vector<int> sz) {
  vec.resize(sz[0]); sz.erase(sz.begin()); if (sz.empty()) { return; }
  for (T& v : vec) { ResizeVec(v, sz); }
}
typedef Triple<int, int, int> TIII;
template<class A, class B, class C>
ostream& operator<< (ostream &out, Triple<A, B, C> t) { return out << "(" << t.st << ", " << t.nd << ", " << t.rd << ")"; }

const int N = 1e6 + 5;
int pref[N], v[N], d[N], h[N];
int Sum(int a, int b) {
  return pref[b] - pref[a - 1];
}
int H(int cut, int x, int tim) {
  return h[cut] + v[x] * (tim - d[cut]);
}
int ToAdd(int cut, int i, int x, int fir) {
  int grew = (d[i] - d[cut]) * Sum(x, fir - 1);
  return grew - (fir - x) * (h[i] - h[cut]);
}
#undef int
int main() {
#define int long long

  ios_base::sync_with_stdio(0);
  cout << fixed << setprecision(10);
  cerr << fixed << setprecision(10);
  cin.tie(0);
  //double beg_clock = 1.0 * clock() / CLOCKS_PER_SEC;
  
  make2(int, n, m);
  RE (i, n) {
    cin>>v[i];
  }
  sort(v + 1, v + 1 + n);
  RE (i, n) {
    pref[i] = pref[i - 1] + v[i];
  }
  vector<PII> last_cut;
  last_cut.PB({1, 0});
  RE (i, m) {
    cin>>d[i]>>h[i];
    int fir = n + 1;
    int res = 0;
    while (!last_cut.empty()) {
      int x = last_cut.back().st;
      int cut = last_cut.back().nd;
      int cur = H(cut, x, d[i]);
      if (cur >= h[i]) {
        res += ToAdd(cut, i, x, fir);
        fir = x;
        last_cut.pop_back();
      } else {
        break;
      }
    }
    if (!last_cut.empty()) {
      auto cut = last_cut.back();
      int kl = cut.st;
      int kp = fir - 1;
      int faj = fir;
      while (kl <= kp) {
        int aktc = (kl + kp) / 2;
        if (H(cut.nd, aktc, d[i]) >= h[i]) {
          faj = aktc;
          kp = aktc - 1;
        } else {
          kl = aktc + 1;
        }
      }
      res += ToAdd(cut.nd, i, faj, fir);
      fir = faj;
    }
    if (fir <= n) {
      last_cut.PB({fir, i});
    }
    cout<<res<<"\n";
  }
  
    
      
    
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  return 0;
}