#include <bits/stdc++.h>
using namespace std;
const int s = 5001*5001;
int tab[s];
inline bool eq(vector<int>&v1,vector<int>&v2){
if(v1.size()!=v2.size())
return false;
for(int i = 0;i<v1.size();i++){
if(v1[i]!=v2[i])
return false;
}
return true;
}
inline vector<vector<int>>Find(int n){
vector<vector<int>>Ans;
for(int i = 1;i<=n;i++){
for(int j = i;j*j+i*i<n*n;j++){
if(tab[n*n-i*i-j*j] != 0){
bool ok = 1;
vector<int>V = {i,j,tab[n*n-i*i-j*j]};
sort(V.begin(),V.end());
for(int k=0;k<Ans.size();k++){
if(eq(Ans[k],V))
ok=0;
}
if(ok)
Ans.push_back({i,j,tab[n*n-i*i-j*j]});
}
}
}
return Ans;
}
void print(vector<int>V){
for(auto x:V)
cout << x << ' ';
cout << '\n';
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie();
cout.tie();
int n;
cin >> n;
vector<int>pier(n+1);
int Ans = 0;
for(int i = 1;i<=n;i++){
pier[i] = i*i;
tab[i*i] = i;
vector<vector<int>>ANS = Find(i);
for(int j=0;j<ANS.size();j++){
// cout << "HELLO";
vector<int>ans = ANS[j];
//cout << "ans = ";
//print(ans);
if(!ans.empty()){
if(ans[0]==ans[1]&&ans[1]==ans[2])
Ans++;
else if(ans[0]==ans[1]||ans[1]==ans[2]||ans[0]==ans[2])
Ans+=2;
else
Ans+=3;
}
}
}
cout << Ans << '\n';
return 0;
}
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 | #include <bits/stdc++.h> using namespace std; const int s = 5001*5001; int tab[s]; inline bool eq(vector<int>&v1,vector<int>&v2){ if(v1.size()!=v2.size()) return false; for(int i = 0;i<v1.size();i++){ if(v1[i]!=v2[i]) return false; } return true; } inline vector<vector<int>>Find(int n){ vector<vector<int>>Ans; for(int i = 1;i<=n;i++){ for(int j = i;j*j+i*i<n*n;j++){ if(tab[n*n-i*i-j*j] != 0){ bool ok = 1; vector<int>V = {i,j,tab[n*n-i*i-j*j]}; sort(V.begin(),V.end()); for(int k=0;k<Ans.size();k++){ if(eq(Ans[k],V)) ok=0; } if(ok) Ans.push_back({i,j,tab[n*n-i*i-j*j]}); } } } return Ans; } void print(vector<int>V){ for(auto x:V) cout << x << ' '; cout << '\n'; } int main(){ ios_base::sync_with_stdio(0); cin.tie(); cout.tie(); int n; cin >> n; vector<int>pier(n+1); int Ans = 0; for(int i = 1;i<=n;i++){ pier[i] = i*i; tab[i*i] = i; vector<vector<int>>ANS = Find(i); for(int j=0;j<ANS.size();j++){ // cout << "HELLO"; vector<int>ans = ANS[j]; //cout << "ans = "; //print(ans); if(!ans.empty()){ if(ans[0]==ans[1]&&ans[1]==ans[2]) Ans++; else if(ans[0]==ans[1]||ans[1]==ans[2]||ans[0]==ans[2]) Ans+=2; else Ans+=3; } } } cout << Ans << '\n'; return 0; } |
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