孟止弋 高级守护 题目链接: 酷町堂:1758 #include<iostream> #include<string> using namespace std; int main(){ string s1,s2,s12; int len; cin>>len; getline(cin,s1); getline(cin,s2); for(int i=0;i<len;i++){ getline(cin,s1); getline(cin,s2); s12+=s2[i]; s12+=s1[i]; } cout<<s12; return 0; } 实在不会了,大家帮帮忙吧~