Cod sursa(job #419118)
Utilizator | Data | 16 martie 2010 22:40:11 | |
---|---|---|---|
Problema | Koba | Scor | 30 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.41 kb |
#include <cstdio>
#define FOR(i,a,b) for(i=a;i<=b;i++)
using namespace std;
int t1,t2,t3,n,s,t4;
int main()
{
freopen("koba.in","r",stdin);freopen("koba.out","w",stdout);scanf("%d%d%d%d",&n,&t1,&t2,&t3);
if (n>=1) s=t1%10;
if (n>=2) s+=t2%10;
if (n>=3) s+=t3%10;
t1%=10;t2%=10;t3%=10;
n-=3;
while (n--)
{
t4=(t3+t2*t1)%10;
t1=t2;t2=t3;t3=t4;
s+=t4;
}
printf("%d\n",s);
return 0;
}