#include <iostream> #include <cmath> using namespace std; int main(){ int n, counter = 0; cin>>n; for(int d=1;d<=n;d++){ for(int h=1;h<=d;h++){ int x = d*d - h*h; for(int a=1;a<=sqrt(x);a++){ int b = sqrt(x - a*a); if(a <= b){ if(b*b == x - a*a){ counter++; } } else{ break; } } } } cout<<counter; 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 | #include <iostream> #include <cmath> using namespace std; int main(){ int n, counter = 0; cin>>n; for(int d=1;d<=n;d++){ for(int h=1;h<=d;h++){ int x = d*d - h*h; for(int a=1;a<=sqrt(x);a++){ int b = sqrt(x - a*a); if(a <= b){ if(b*b == x - a*a){ counter++; } } else{ break; } } } } cout<<counter; return 0; } |