uva 10669

很像二進制的做法，並且需要用到大數

//====================================================================||
//                                                                    ||
//                                                                    ||
//                         Author : GCA                               ||
//                  6AE7EE02212D47DAD26C32C0FE829006                  ||
//====================================================================||
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <climits>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <cctype>
#include <utility>
using namespace std;
#ifdef ONLINE_JUDGE
#define ll "%lld"
#else
#define ll "%I64d"
#endif
typedef unsigned int uint;
typedef long long int Int;
#define Set(a,s) memset(a,s,sizeof(a))
#define Write(w) freopen(w,"w",stdout)
#define Read(r) freopen(r,"r",stdin)
#define Pln() printf("\n")
#define I_de(x,n)for(int i=0;i<n;i++)printf("%d ",x[i]);Pln()
#define De(x)printf(#x"%d\n",x)
#define For(i,x)for(int i=0;i<x;i++)
#define CON(x,y) x##y
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\
    printf("%d ",dp[htx][hty]);}Pln();}
#define M 55
#define PII pair<int,int>
#define PB push_back
#define oo INT_MAX
#define Set_oo 0x3f
#define Is_debug true
#define debug(...) if(Is_debug)printf("DEBUG: "),printf(__VA_ARGS__)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin();it!=(c).end();it++)
#define eps 1e-6
bool xdy(double x,double y){return x>y+eps;}
bool xddy(double x,double y){return x>y-eps;}
bool xcy(double x,double y){return x<y-eps;}
bool xcdy(double x,double y){return x<y+eps;}
int min3(int x,int y,int z){
    int tmp=min(x,y);
    return min(tmp,z);
}
int max3(int x,int y,int z){
    int tmp=max(x,y);
    return max(tmp,z);
}
class bignum{
public:
    Int str[1000];
    int byte[1000];
    int bnum;
    static const int maxn=50;
    bignum(){
        Set(str,0);
        bnum=-1;
    }
    void print(){
        int i=0;
        for(i=maxn-1;i>0;i--)
            if(str[i]!=0)break;
        printf("%lld",str[i]);
        for(i--;i>=0;i--){
            printf("%04lld",str[i]);
        }
    }
    bool bigz(){
        for(int i=maxn-1;i>=0;i--){
            if(str[i]>0)return true;
        }
        return false;
    }
    void div(){
        Int c=0;
        bnum=0;
        while(bigz()){
            c=0;
            for(int i=maxn-1;i>=0;i--){
                Int tmp=(str[i]+c);
                str[i]=tmp/2;
                c=(tmp%2)*10000;
            }
            byte[bnum++]=c/10000;
        }

    }
    void sub(int a){
        Int c=0;
        for(int i=0;i<maxn;i++){
            Int tmp=str[i]-a-c;
            a=0;
            if(tmp<0){
                c=1;
                str[i]=tmp+10000;
            }else{
                str[i]=tmp;
                c=0;
            }
        }
    }
    void mul(int a){
        Int c=0;
        Int str2[1000];
        Set(str2,0);
        for(int i=0;i<maxn;i++){
            Int tmp=str[i]*a;
            str2[i]+=tmp%10000;
            c=tmp/10000;
            for(int k=i+1;k<maxn;k++){
                Int tmp2=str2[k]+c;
                str2[k]+=tmp2%10000;
                c=tmp2/10000;
            }
        }
        memcpy(str,str2,sizeof(str));
    }
};
int main() {
    ios_base::sync_with_stdio(0);
    char str[1000],stmp[10];
    while(~scanf("%s",str)){
        if(!strcmp(str,"0"))break;
        for(int i=0;i<10;i++)stmp[i]='0';
        bignum n;
        bignum p;
        int len=strlen(str);
        int j=0,s=0;
        for(int i=len-1;i>=0;i--){
            stmp[3-j]=str[i];
            j++;
            if(j>=4||i==0){
                stmp[4]='';
                sscanf(stmp,"%lld",&n.str[s]);
                s++;
                for(int k=0;k<4;k++)stmp[k]='0';
                j=0;
            }
        }
        n.sub(1);
        p.str[0]=1;
//        n.print();
//        Pln();
        n.div();
        if(n.bnum==0){
            printf("{ }\n");
        }else{
            printf("{");
            for(int i=0;i<n.bnum;i++){
//                printf("%d\n",n.byte[i]);
                if(n.byte[i]){
                    printf(" ");
                    p.print();
                    if(i!=n.bnum-1)printf(",");
                }
                p.mul(3);
            }
            printf(" }\n");

        }
    }

















}