杭电acm 1002 (A+B Problem II)

#include<iostream> #include<string> using namespace std; int main() { int T; string s1,s2,temp; cin>>T; if(T>20||T<0) return 0; for(int i=0;i<T;i++) { cin>>s1>>s2; cout<<"Case "<<i+1<<":"<<"\n"<<s1<<"

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