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Cod sursa(job #733620)
#include <fstream>
#include <cstring>
using namespace std;
#define dim 211
short int a[dim], b[dim],aux[dim];
int main()
{
ifstream fin("nunta.in");
ofstream fout("nunta.out");
int n, i;
a[1]=b[1]=a[0]=b[0]=1;
fin>>n;
for(i=3;i<=n+1;++i)
{
for(int j=0;j<=b[0];++j)
aux[j]=b[j];
int t=0,k;
for(k=1;k<=a[0] || k<=b[0] || t;++k,t/=10)
{
if (k > a[0]) a[k] = 0;
if (k > b[0]) b[k] = 0;
b[k]=(t+=a[k]+b[k])%10;
}
b[0]=k-1;
for(int j=0;j<=aux[0];++j)
a[j]=aux[j];
}
for(i=b[0];i;--i)
fout<<b[i];
return 0;
}