注意下单复数

#include<bits/stdc++.h>

using namespace std;
pair<string,string>pa;
int main()
{
int n;
scanf("%d",&n); vector<pair<string,string> >vec;
for(int i=;i<n;i++){
char a[],b[];
scanf("%s %s",a,b);
bool flag=false;
for(int j=;b[j];j++){
if(b[j]=='l'){
b[j]='L';
flag=true;
}
else if(b[j]==''){
b[j]='@';
flag=true;
}
else if(b[j]==''){
b[j]='%';
flag=true;
}
else if(b[j]=='O'){
b[j]='o';
flag=true;
}
}
if(flag) vec.push_back(make_pair(a,b));
}
if(vec.size()==){
if(n==) printf("There is %d account and no account is modified\n",n);
else printf("There are %d accounts and no account is modified\n",n);
} else{
printf("%d\n",vec.size());
for(int i=;i<vec.size();i++){
cout<<vec[i].first<<" "<<vec[i].second<<endl;
}
}
return ;
}

其实没必要用vector<pari<string,string>> 直接用vector<string> 即可 把空格也当成字符串放在一个字符串里

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