计数排序 +高精度加法不太擅长这种题做个标记

#include<cstdio>
#include<cstring>
#include<algorithm>
#include<iostream>
#include<vector>
#include<string>
#include<map>
#include<set>
#include<queue>
#include<stack>
#include<cstdlib>
#include<cmath>
#define pi acos(-1.0);
#define LL long long
using namespace std;
int t,n;
char a[10000005],b[5],c;
short st[10000005];
const int L=110;
int sum[12];
int main()
{
    scanf("%d",&t);
    getchar();
    while(t--)
    {
        memset(sum,0,sizeof(sum));
        int l = 0;
        while(char c = getchar())
        {
            if(c=='\n')break;
            sum[c-'0']++;
            l++;
        }
        int la = 0,lb = 0;
        if(sum[0]==l-1)printf("Uncertain\n");
        else{
            for(int i=1;i<=9;i++)
                if(sum[i])
                {
                   b[lb++] = i+'0';
                   sum[i]--;
                   break;
                }
                b[lb] = '\0';
            for(int i=9;i>=0;i--)
                while(sum[i])
                {
                   a[la++] = i+'0';
                   sum[i]--;
                }
                a[la] = '\0';
           int jin = 0;
           int i,j,l1 = 0;
           for(i=la-1,j=lb-1;i>=0&&j>=0;i--,j--)
           {
               st[l1++] = (a[i]-'0'+b[j]-'0'+jin)%10;
               jin = (a[i]-'0'+b[j]-'0'+jin)/10;
           }
            for(;i>=0;i--)
            {
               st[l1++] = ((a[i]-'0'+jin)%10);
               jin = (a[i]-'0'+jin)/10;
            }
            for(;j>=0;j--)
            {
               st[l1++] = ((b[j]-'0'+jin)%10);
               jin = (b[j]-'0'+jin)/10;
            }
            if(jin)printf("1");
            for(int i=l1-1;i>=0;i--) putchar(st[i]+'0');
            printf("\n");
        }
    }
    return 0;
}