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BSMATH1.c
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#include<stdio.h>
#include<string.h>
int base[37]={0};
char A[1000],op,B[1000],e,C[1000];
int findBase()
{
long long int i,j,a=0,b=0,c=0,l1,l2,l3,flag,x;
l1 = strlen(A);
l2 = strlen(B);
l3=strlen(C);
for(i=2;i<=36;i++)
{
if(base[i]==0){
flag=0,a=0,b=0,c=0;
for(j=0;j<=l1-1;j++)
{
x = A[j]-'0';
if(x>9)
x-=7;
if(x>=i)
{
flag=1;
break;
}
a = a + (A[j]-'0')*pow(i,l1-1-j);
}
if(flag==1)
continue;
// printf("\n%lld",a);
for(j=0;j<=l2-1;j++)
{
x = B[j]-'0';
if(x>9)
x-=7;
if(x>=i)
{
flag=1;
break;
}
b = b + (B[j]-'0')*pow(i,l2-1-j);
}
//printf("\n%lld",b);
if(flag==1)
continue;
for(j=0;j<=l3-1;j++)
{
x = C[j]-'0';
if(x>9)
x-=7;
if(x>=i)
{
flag=1;
break;
}
c = c + (C[j]-'0')*pow(i,l3-1-j);
}
if(flag==1)
continue;
//printf("\n%lld",c);
if((a+b)==c||(a-b)==c)
{
base[i] = 1;
return i;
}
}
}
}
int main()
{
int n,l1,t,l2,a,b,c,base,i,l3;
scanf("%d",&n);
scanf("%s %c %s %c %s",A,&op,B,&e,C);
printf("%d\n",findBase());
base=findBase();
scanf("%d",&t);
while(t--)
{
scanf("%s %c %s %c ",A,&op,B,&e);
l1 = strlen(A);
l2 = strlen(B);
a=0;
b=0;
c=0;
//l3=strlen(C);
for(i=0;i<l1;i++)
a+=A[i]*pow(base,l1-i-i);
for(i=0;i<l2;i++)
b+=B[i]*pow(base,l2-i-i);
// for(i=0;i<l3;i++)
// c+=C[i]*pow(base,l3-i-i);
printf("%lld\n",a+b);
}
}