36 lines
565 B
C++
36 lines
565 B
C++
#include<iostream>
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#include<string>
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using namespace std;
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long long turn(string num,int j)
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{
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long long ans=0;
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int i=0;
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if(num[0]=='-') i++;
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for(;i<num.size();i++) ans=ans*j+num[i]-'0';
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if(num[0]=='-') ans=-ans;
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return ans;
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}
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bool can(string num,int j)
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{
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int i=0;
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if(num[0]=='-') i++;
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for(;i<num.size();i++) if(num[i]-'0'>=j) return 0;
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return 1;
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}
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int main()
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{
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string a,b,c;
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cin>>a>>b>>c;
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for(int i=2;i<=16;i++)
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{
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if(can(a,i)&&can(b,i)&&can(c,i)&&turn(a,i)*turn(b,i)==turn(c,i))
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{
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cout<<i<<endl;
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return 0;
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}
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}
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cout<<0<<endl;
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return 0;
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}
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