#include <iostream>
using namespace std;
int main()
{
int n =0, c=0, k=0;
cin >> n;
for(int i = 1; i <= n/7; i++) {
for(int j = 2*i; j <= n; j += i) {
c = n-i-j;
if(j > c/2)
break;
if((c % i == 0) && (c % j == 0)) {
//cout << i << " " << j << " " << c << endl;
k++;
}
}
}
cout << k;
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | #include <iostream> using namespace std; int main() { int n =0, c=0, k=0; cin >> n; for(int i = 1; i <= n/7; i++) { for(int j = 2*i; j <= n; j += i) { c = n-i-j; if(j > c/2) break; if((c % i == 0) && (c % j == 0)) { //cout << i << " " << j << " " << c << endl; k++; } } } cout << k; return 0; } |
English