code_game

#include <cstdio>
#define DMax 50
#define NMax 80
using namespace std;
struct bigint{
     int a[DMax];
     bigint(){
         for (int i=0;i<DMax;i++)a[i]=0;
     }
     void set(int x){
         for (int i=0;i<DMax;i++){
             a[i]=x%10;
             x/=10;
         }
     }
     bigint operator*(int x)const{
         bigint r;
         int s=0;
         for (int i=0;i<DMax;i++){
             s+=a[i]*x;
             r.a[i]=s%10;
             s/=10;
         }
         return r;
     }
     bigint operator+(int x)const{
         bigint r;
         for (int i=0;i<DMax;i++){
             x+=a[i];
             r.a[i]=x%10;
             x/=10;
         }
         return r;
     }
     bool operator<(const bigint &b)const{
         for (int i=DMax-1;i>=0;i--){
             if (a[i]<b.a[i])return true;
             if (b.a[i]<a[i])return false;
         }
         return false;
     }
     void print(FILE *fout){
         int l;
         for (l=DMax-1;l>0 && a[l]==0;l--);
         for (int i=l;i>=0;i--)fprintf(fout,"%d",a[i]);
     }
     bigint operator+(const bigint &b)const{
         bigint r;
         int s=0;
         for (int i=0;i<DMax;i++){