#include "bits/stdc++.h" #define REP(i,num) for(ll i=0;i<(num);++i) #define FOR(i,c,num) for(ll (i)=(c);(i)<(num);++(i)) #define LOOP(i) while(i--) #define ALL(c) c.begin(),c.end() #define PRINTALL(c) for(auto pitr=c.begin();pitr!=c.end();++pitr){cout<<*pitr;if(next(pitr,1)!=c.end())cout<<' ';}cout<& lhs,const pair& rhs){return lhs.c comp rhs.c;} using namespace std; using ll = long long; using vll = vector; using vvll = vector>; constexpr ll atcoder_mod = 1e9+7; template T in(){ T x; cin >> x; return (x); } template> C vecin(int N){ C x(N);REP(i,N){ x[i]=in(); }return x; } void vout(){ cout << endl; } template void vout(Head&& h,Tail&&... t){ cout << ' ' << h;vout(forward(t)...); } void out(){ cout << endl; } template void out(Head&& h,Tail&&... t){ cout << h;vout(forward(t)...); } template bool chmax(T& a,T b){ if(a bool chmin(T& a,T b){ if(a>b){ a=b;return true; }return false; } int main(){ cin.tie(0); ios::sync_with_stdio(false); cout< V; REP(w,N){ ll W = w+1; REP(z,N){ ll Z = z+1; ll P = W*W+D-Z*Z; if(P<2 || P>2ll*N*N) continue; V.push_back(P); //R[P]++; } } sort(ALL(V)); ll C=0; REP(x,N){ ll X=x+1; REP(y,N){ ll Y=y+1; //auto res = R.find(X*X+Y*Y); auto res = equal_range(ALL(V),X*X+Y*Y); if(res.first!=V.end()) C += distance(res.first,res.second); } } out(C); return 0; }