// pin.cpp
#include <iostream>
#include <vector>
using namespace std;
void solve();
int compute_divisors(int* dst, int number);
int divisors[100000];
int divisors_buffer[100000];
int main()
{
ios_base::sync_with_stdio(false);
solve();
return 0;
}
void solve()
{
int n;
cin >> n;
int count = 0;
int divisors_cnt = compute_divisors(divisors, n);
for(int i = 0; i < divisors_cnt; i++)
{
int a = n - divisors[i];
int buffer_count = compute_divisors(divisors_buffer, a);
for(int j = 0; j < buffer_count; j++)
{
if(divisors_buffer[j] > divisors[i] && divisors_buffer[j] % divisors[i] == 0)
{
if(divisors_buffer[j] < a - divisors_buffer[j])
{
count++;
}
}
}
}
cout << count << endl;
}
int compute_divisors(int* dst, int number)
{
int x = number;
int divisors_cnt = 0;
int i = 1;
while(i < x)
{
if(number % i == 0)
{
divisors_cnt++;
*(dst++) = i;
x = number / i;
if(i > 1 && i < x)
{
divisors_cnt++;
*(dst++) = x;
}
}
i++;
}
return divisors_cnt;
}
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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | // pin.cpp #include <iostream> #include <vector> using namespace std; void solve(); int compute_divisors(int* dst, int number); int divisors[100000]; int divisors_buffer[100000]; int main() { ios_base::sync_with_stdio(false); solve(); return 0; } void solve() { int n; cin >> n; int count = 0; int divisors_cnt = compute_divisors(divisors, n); for(int i = 0; i < divisors_cnt; i++) { int a = n - divisors[i]; int buffer_count = compute_divisors(divisors_buffer, a); for(int j = 0; j < buffer_count; j++) { if(divisors_buffer[j] > divisors[i] && divisors_buffer[j] % divisors[i] == 0) { if(divisors_buffer[j] < a - divisors_buffer[j]) { count++; } } } } cout << count << endl; } int compute_divisors(int* dst, int number) { int x = number; int divisors_cnt = 0; int i = 1; while(i < x) { if(number % i == 0) { divisors_cnt++; *(dst++) = i; x = number / i; if(i > 1 && i < x) { divisors_cnt++; *(dst++) = x; } } i++; } return divisors_cnt; } |
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