#include <iostream>
#include <conio.h>
#include <cstdlib>
using namespace std;

int fac(char* n) {
    int i, m=0;
    for (i = 0; i < 14; i++) {
        if ((*(n+i))!=' '&&(*(n+i))!='\0') {
            m = m + 1;
        }
    }
    return m;
}

void tanme1(char* n1,char* n2,char* n3, int z1) {
    int i, j, x1, x2, x3, k;
        for (i = z1-1, k=0; i>=0; i--){
        if(*(n1+i)=='A'||*(n1+i)=='B') x1=*(n1+i)-'A'+10; else x1=*(n1+i)-'0';
        if(*(n2+i)=='A'||*(n2+i)=='B') x2=*(n2+i)-'A'+10; else x2=*(n2+i)-'0';
        x3=x1+x2+k; k=0;
        if (x3>=12) {x3-=12; k=1;}
        if (x3 >= 0&&x3<=9) *(n3+i)=x3+'0';
        else *(n3+i)=x3+'A'-10;
        if (i==0&&k!=0) {for(j=14; j>=0; j--) *(n3+j+1)=*(n3+j); *(n3+i)=k+'0';}
        }

}

void tanme2(char* n1,char* n2,char* n3, int z1, int* z2) {
    int i, j, x1, x2, x3, k;
        for (j = 0; j<=z1-1; j++){
        if(*(n1+j)=='A'||*(n1+j)=='B') x1=*(n1+j)-'A'+10; else x1=*(n1+j)-'0';
        if(*(n2+j)=='A'||*(n2+j)=='B') x2=*(n2+j)-'A'+10; else x2=*(n2+j)-'0';
        if(x1>x2)break;
        else if(x1<x2){*z2=1;break;}
        }
        for (i = z1-1, k=0; i>=0; i--){
        if(*(n1+i)=='A'||*(n1+i)=='B') x1=*(n1+i)-'A'+10; else x1=*(n1+i)-'0';
        if(*(n2+i)=='A'||*(n2+i)=='B') x2=*(n2+i)-'A'+10; else x2=*(n2+i)-'0';
        if(*z2==0) x3=x1-x2-k;
        else if(*z2==1) x3=x2-x1-k;
        k=0;
        if (x3<0) {x3+=12; k=1;}
        if (x3 >= 0&&x3<=9) *(n3+i)=x3+'0';
        else *(n3+i)=x3+'A'-10;

        }
}

int _tmain(int argc, _TCHAR* argv[]) {
    int q1=0, q2=0, b1=0, i, j, x, y, z2=0;
    char v;
    char var4[20] = {""};
    char var3[20] = {""};
    char var2[20] = {""};
    char var1[20] = {""};
    cout << "chislo1:";
    gets(var1);
    cout << "chislo2:";
    gets(var2);
    if (var1[0]=='-') {q1=1; for(i=1; i<15; i++) var1[i-1]=var1[i];}
    if (var2[0]=='-') {q2=1; for(i=1; i<15; i++) var2[i-1]=var2[i];}
    x=fac(var1); y=fac(var2);
    if (x>y) {
     for (i=0; i <x-y; i++) {for(j=15-x+y; j>=0; j--) var2[j+1]=var2[j]; var2[i]='0';}
    }
     else {
     for (i=0; i <y-x; i++) {for(j=15-y+x; j>=0; j--) var1[j+1]=var1[j]; var1[i]='0';}
    }
    cout << endl;
    for (i = 0; i < 15; i++) {
    cout << var1[i] ;
    }
    cout << endl;
    for (i = 0; i < 15; i++) {
    cout << var2[i] ;
    }
    cout << endl;
    cout << "---------------------------" <<  endl;

    if (q1==1&&q2==1) {tanme1(var1,var2,var3,fac(var1));
                      for(j=14; j>=0; j--) var3[j+1]=var3[j];var3[0]='-';

                      tanme2(var2,var1,var4,fac(var1),&z2);
                      if(z2==1){for(j=14; j>=0; j--) var4[j+1]=var4[j];var4[0]='-';}}

    if (q1==0&&q2==0) {tanme1(var1,var2,var3,fac(var1));

                      tanme2(var1,var2,var4,fac(var1),&z2);
                      if(z2==1){for(j=14; j>=0; j--) var4[j+1]=var4[j];var4[0]='-';}}

    if (q1==1&&q2==0) {tanme2(var2,var1,var3,fac(var1),&z2);
                      if(z2==1){for(j=14; j>=0; j--) var3[j+1]=var3[j];var3[0]='-';}

                      tanme1(var1,var2,var4,fac(var1));
                      for(j=14; j>=0; j--) var4[j+1]=var4[j];var4[0]='-';}

    if (q1==0&&q2==1) {tanme2(var1,var2,var3,fac(var1),&z2);
                      if(z2==1){for(j=14; j>=0; j--) var3[j+1]=var3[j];var3[0]='-';}

                      tanme1(var1,var2,var4,fac(var1));}

    for (i = 0; i < 15; i++) {
    cout << var3[i] ;
    }
    cout << endl;
    for (i = 0; i < 15; i++) {
    cout << var4[i] ;
    }
    getch();
    return 0;
}