#include<iostream> using namespace std; int main() { long long int m = 0; long long int c = 0; long long int x = 0; long long int k,a,b; cin >> k >> a >> b; for(int i = a; i<=b; i++) { if(i%k == 0) { for(int j = 1; j<i; j *= 10) { m = (i/j)%10; c += (m*m); } if(c == i/k) { x += 1; } c = 0; } } cout << x << endl;; 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 | #include<iostream> using namespace std; int main() { long long int m = 0; long long int c = 0; long long int x = 0; long long int k,a,b; cin >> k >> a >> b; for(int i = a; i<=b; i++) { if(i%k == 0) { for(int j = 1; j<i; j *= 10) { m = (i/j)%10; c += (m*m); } if(c == i/k) { x += 1; } c = 0; } } cout << x << endl;; return 0; } |