P406 string

 

数字对撞机 (number.pas/c/cpp)

 http://vod.yysyxx.com:8080/problem.php?id=1438

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#include<iostream> #include<string> #include<algorithm> using namespace std; int main(){     string s,t;     int i;     cin>>s>>t;     for(i=s.size()-1;i>=0;i--)         if(s[i]<t[i])s.erase(i,1);         else if(t[i]<s[i])t.erase(i,1);     if(s.size()==0)s="BOOM";     while(s.size()>0 && s[0]=='0')s.erase(0,1);     if(s.size()==0)s="0";       if(t.size()==0)t="BOOM";     while(t.size()>0 && t[0]=='0')t.erase(0,1);     if(t.size()==0)t="0";     cout<<s<<endl<<t<<endl;     return 0; }