PAT1006(A)

#include <iostream>#include <string>#define maxr 100using namespace std;string record[maxr][3];int main(){    unsigned int M;    cin>>M;    for(int i=0;i<M;++i){        cin>>record[i][0]>>record[i][1]>>record[i][2];    }    string sign_in=record[0][1],sign_out=record[0][2];    for(int i=0;i<M;++i){        if(record[i][1]<sign_in)            sign_in=record[i][1];        if(record[i][2]>sign_out)            sign_out=record[i][2];    }    for(int i=0;i<M;++i){        if(record[i][1]==sign_in){            cout<<record[i][0]<<' ';        }        if(record[i][2]==sign_out){            cout<<record[i][0];        }    }    return 0;}