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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- int n;
- scanf("%d", &n);
- //bool flag = false;
- for(int i = sqrt(n); i >= 1; i--)
- {
- if(n % i == 0)
- {
- printf("%d\n", 2*(n / i) + 2*i);
- break;
- }
- }
- //if(!flag) printf("%d\n", 2*n + 2);
- }
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