初一萌新刚学OI求条

#include<bits/stdc++.h>
using namespace std;
#ifdef __linux__
#define gc getchar_unlocked
#define pc putchar_unlocked
#else
#define gc _getchar_nolock
#define pc _putchar_nolock
#endif
#define int long long
// #define R register
#define rint register int
#define _ read<int>()
inline bool blank(const char x)
{
    return !(x^9)||!(x^13)||!(x^10)||!(x^32);
}
template<class T>inline T read()
{
    T r=0,f=1;char c=gc();
    while(!isdigit(c))
    {
        if(c=='-') f=-1;
        c=gc();
    }
    while(isdigit(c)) r=(r<<1)+(r<<3)+(c^48),c=gc();
    return f*r;
}
inline void out(int x)
{
    if(x<0) pc('-'),x=-x;
    if(x<10) pc(x+'0');
    else out(x/10),pc(x%10+'0');
}
const int N=110;
string ss[N][N],s;
int b[N];
map<string,string>mp;
inline void p(const string &x,string l[],int h)
{
    b[h]=1;
    for(char c:x)
    {
        if(c==' ') b[h]++;
        else l[b[h]]+=c;
    }
}
inline string z(const string &x)
{
    string l="";
    for(char c:x)
    {
        if((c>='A'&&c<='Z')||(c>='0'&&c<='9')||(c>='a'&&c<='z')) l+=c;
    }
    return l;
}
signed main()
{
    rint n=_;
    for(rint i=1;i<=n;i++)
    {
        cin>>ss[i][1];
        if(ss[i][1][0]=='#')
        {
            cin>>ss[i][2];
            getline(cin,ss[i][3]);
        }
        else
        {
            s="";
            getline(cin,s);
            p(s,ss[i],i);
        }
    }
    for(rint i=1;i<=n;i++)
    {
        if(ss[i][1][0]=='#') 
        {
            if(ss[i][1][1]=='d')
            {
                mp[z(ss[i][2])]=ss[i][3];
            }
            else
            {
                mp[z(ss[i][2])]="";
            }
        }
        else
        {
            for(rint j=1;j<=b[i];j++)
            {
                if(mp[z(ss[i][j])]!="")
                {
                    for(rint k=1;k<mp[z(ss[i][j])].size();k++)
                    {
                        pc(mp[z(ss[i][j])][k]);
                    }
                    for(rint k=0;k<ss[i][j].size();k++)
                    {
                        char c=ss[i][j][k];
                        if((c>='A'&&c<='Z')||(c>='0'&&c<='9')||(c>='a'&&c<='z'));
                        else pc(c);
                    }
                }
                else
                {
                    cout<<ss[i][j];
                }
                pc(' ');
            }
            
        }
        pc('\n');
    }
    return 0;
}