Cod sursa(job #1182089)
Utilizator | Tudor Maxim tudormaxim | Data | 4 mai 2014 18:38:32 |
---|---|---|---|
Problema | 12-Perm | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.57 kb |
#include <fstream>
#define MOD 1048576
using namespace std;
ifstream in("12perm.in");
ofstream out("12perm.out");
int a[5];
int main()
{
int n, i;
in>>n;
if(n==1) out<<1;
else if(n==2) out<<2;
else if(n==3) out<<6;
else if(n==4) out<<12;
else
{
a[0]=1;
a[1]=2;
a[2]=6;
a[3]=12;
for(i=5;i<=n;i++)
{
a[4]=(a[3]+a[1]+2*(i-2))%MOD;
a[0]=a[1];
a[1]=a[2];
a[2]=a[3];
a[3]=a[4];
}
out<<a[4];
}
}