1035 Password (20分)

字符串操作，替换某些字符。注意没修改时输出的单复数区别，1个和多个是不一样的

#include <bits/stdc++.h>

using namespace std;

int main(){
    int num;
    cin>>num;
    vector<pair<string,string>> res;
    for(int i=0;i<num;i++){
        string s1,s2;
        cin>>s1>>s2;
        int len=s2.size();
        bool flag=true;
        for(int i=0;i<len;i++){
            if(s2[i]=='1'){
                s2[i]='@';
                flag=false;
            }else if(s2[i]=='0'){
                s2[i]='%';
                flag=false;
            }else if(s2[i]=='l'){
                s2[i]='L';
                flag=false;
            }else if(s2[i]=='O'){
                s2[i]='o';
                flag=false;
            }
        }
        if(!flag)res.push_back(pair<string,string>(s1,s2));
    }

    if(res.size()==0){
        if(num==1)printf("There is 1 account and no account is modified\n");
        else printf("There are %d accounts and no account is modified\n",num);
        return 0;
    }
    printf("%d\n",res.size());
    for(auto it1=res.begin();it1!=res.end();it1++){
        printf("%s %s\n",it1->first.c_str(),it1->second.c_str());
    }



}