Cod sursa(job #2401483)
Utilizator | Data | 9 aprilie 2019 19:09:25 | |
---|---|---|---|
Problema | 12-Perm | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.53 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("12perm.in");
ofstream out("12perm.out");
int n;
int v[3];
int main()
{
in >> n;
if(n == 1)
out << 1;
else if(n == 2)
out << 4;
else if(n == 3)
out << 6;
v[0] = 12;
v[1] = 6;
v[3] = 2;
for(int i = 5; i <= n; i++)
{
int tmp = v[0];
v[0] = (v[0] + v[2] + 2*(i-2)) & (1 << 19);
v[2] = v[1];
v[1] = tmp;
}
out << v[0];
return 0;
}