Cod sursa(job #243861)
Utilizator | Data | 14 ianuarie 2009 09:47:55 | |
---|---|---|---|
Problema | Koba | Scor | 20 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.4 kb |
#include <stdio.h>
#define NR 100005
int cifra(int n)
{
return n%10;
}
int main()
{
freopen("koba.in","r",stdin);
freopen("koba.out","w",stdout);
int n,m,p,q,a[NR],s=0,i;
scanf("%d%d%d%d",&n,&m,&p,&q);
a[1]=cifra(m);
a[2]=cifra(p);
a[3]=cifra(q);
for (i=4; i<=n; i++)
a[i]=cifra(cifra(a[i-1])+cifra(a[i-2]*a[i-3]));
for (i=1; i<=n; i++)
s+=a[i];
printf("%d",s);
return 0;
}