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Cod sursa(job #358291)
#include<stdio.h>
int n,v1[501],v2[501],v3[501];
void cpy(int d[501],int s[501])
{
for(int i=s[0];i>=0;i--)
d[i]=s[i];
}
void add(int a[501],int b[501],int c[501])
{
int max,i,t=0;
if(a[0]>b[0])
max=a[0];
else
max=b[0];
for(i=1;i<=max || t; i++)
{
if (i > a[0]) a[i] = 0;
if (i > b[0]) b[i] = 0;
c[i]=(a[i]+b[i]+t)%10;
t=(a[i]+b[i]+t)/10;
}
c[0]=i-1;
}
int main ()
{
int i;
freopen("nunta.in","r",stdin);
freopen("nunta.out","w",stdout);
scanf("%d",&n);
v1[0] = v1[1] = 1;
v2[0] = v2[1] = 1;
for(i=2;i<=n;i++)
{
add(v1,v2,v3);
cpy(v1,v2);
cpy(v2,v3);
}
for(i=v3[0];i>=1;i--)
printf("%d",v3[i]);
printf("\n");
return 0;
}