#include <bits/stdc++.h>
using namespace std;
vector <int> factors(int x) {
vector <int> result;
int i = 1;
while(i*i <= x) {
if(x % i == 0) {
result.push_back(i);
if(x/i != i) {
result.push_back(x/i);
}
}
i++;
}
return result;
}
int main()
{
unsigned int n,a,x,y,count=0;
cin>>n;
vector <int> num = factors(n);
for(int aa=0;aa<num.size();aa++)
{
a = num[aa];
vector <int> num2 = factors((n/a)-1);
for(int bb=0;bb<num2.size();bb++)
{
x = num2[bb];
y = ((n-a) / (a*x))-1;
if( a<(a*x) && ((a*x)<(a*x*y)) && (a+(a*x)+(a*x*y))==n)
{
count++;
}
}
}
cout<<count<<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 30 31 32 33 34 35 36 37 38 39 40 | #include <bits/stdc++.h> using namespace std; vector <int> factors(int x) { vector <int> result; int i = 1; while(i*i <= x) { if(x % i == 0) { result.push_back(i); if(x/i != i) { result.push_back(x/i); } } i++; } return result; } int main() { unsigned int n,a,x,y,count=0; cin>>n; vector <int> num = factors(n); for(int aa=0;aa<num.size();aa++) { a = num[aa]; vector <int> num2 = factors((n/a)-1); for(int bb=0;bb<num2.size();bb++) { x = num2[bb]; y = ((n-a) / (a*x))-1; if( a<(a*x) && ((a*x)<(a*x*y)) && (a+(a*x)+(a*x*y))==n) { count++; } } } cout<<count<<endl; return 0; } |
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