#include <iostream> using namespace std; /* run this program using the console pauser or add your own getch, system("pause") or input loop */ int main(int argc, char** argv) { long long k, a,b; long long sw=0; cin >> k >> a >> b; for (long long i=a; i <=b; i++) { int d=10; long long fn=0; long long l=i; while(l!=0) { fn+=(l%d)*(l%d); l=l/d; } if(k*fn==i) { sw=i; break; } } // cout << sw; long long wynik=0; for (long long i=sw; i <=b; i+=k) { int d=10; long long fn=0; long long l=i; while(l!=0) { fn+=(l%d)*(l%d); l=l/d; } if(k*fn==i) { wynik++; } } cout << wynik; 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 | #include <iostream> using namespace std; /* run this program using the console pauser or add your own getch, system("pause") or input loop */ int main(int argc, char** argv) { long long k, a,b; long long sw=0; cin >> k >> a >> b; for (long long i=a; i <=b; i++) { int d=10; long long fn=0; long long l=i; while(l!=0) { fn+=(l%d)*(l%d); l=l/d; } if(k*fn==i) { sw=i; break; } } // cout << sw; long long wynik=0; for (long long i=sw; i <=b; i+=k) { int d=10; long long fn=0; long long l=i; while(l!=0) { fn+=(l%d)*(l%d); l=l/d; } if(k*fn==i) { wynik++; } } cout << wynik; return 0; } |