Untitled

#include <stdio.h>
#include <string.h>
int max(int a,int b){
    if(a>b) return a;
    else return b;
}
int main(){
    char a[105], b[105], c[105], d[105];
    scanf("%s%s",a,b);
    int ad=strlen(a), bd=strlen(b);
    if(ad>bd){
        for(int i=0; i<ad-bd; i++){
            d[i]='0';
            c[i]=a[i];
        }
        for(int i=ad-bd; i<ad; i++){
            d[i]=b[i-ad+bd];
            c[i]=a[i];
        }
    }
    else{
        for(int i=0; i<bd-ad; i++){
            c[i]='0';
            d[i]=b[i];
        }
        for(int i=bd-ad; i<bd; i++){
            c[i]=a[i+ad-bd];
            d[i]=b[i];
        }
    }
    /*for(int i=0; i<max(ad,bd); i++){
        printf("%c",c[i]);
    }
    printf("\n");
    for(int i=0; i<max(ad,bd); i++){
        printf("%c",d[i]);
    }
    printf("\n");*/
    char ans[max(ad,bd)];
    int tmp=0,tmp2=0;
    for(int i=max(ad,bd)-1; i>=0; i--){
        if(c[i]==',' || d[i]==','){
            ans[i]=',';
            continue;
        }
        if(tmp==1){
            ans[i]='1';
            tmp=0;
        }
        else{
            ans[i]='0';
        }
        //printf("c=%c,d=%c,c+d=%d\n",c[i],d[i],(c[i]+d[i]-'0'-'0')%10);
        if(i!=0 && (ans[i]+c[i]+d[i]-'0'-'0'-'0')>=10){
            tmp=1;
        }
        else if(i==0 && (ans[i]+c[i]+d[i]-'0'-'0'-'0')>=10){
            tmp2=1;
        }
        ans[i]=ans[i]+(c[i]+d[i]-'0'-'0')%10;
        if(ans[i]>'9') ans[i]=ans[i]-10;
    }
    if(tmp2==1 && strlen(ans)%4==3) printf("1,");
    else if(tmp==2 && strlen(ans)%4!=3) printf("1");
    for(int i=0; i<max(ad,bd); i++){
        printf("%c",ans[i]);
    }
    printf("\n");
    return 0;
}