PAT(BASIC)1033. 旧键盘打字(20)

#include<iostream>

#include<cctype>

#include<vector>

int main(void){

using namespace std;

int hasher[255]={0};

char c;

while((c=getchar()) && (c!='\n')){

if(c=='+'){

for(char t = 'A';t <= 'Z';++t)

hasher[t]=1;

}

else if(isupper(c)){

hasher[c]=1;

hasher[tolower(c)]=1;}

else

hasher[c]=1;

}

vector<char> v;

while((c=getchar()) && (c!='\n')){

if(!hasher[c])

v.push_back(c);

}

if(!v.size())

cout<<endl;

else{

for(auto c:v)

cout<<c;

}

return 0;

}