写了16遍才AC的题解

来看看吧

#include<bits/stdc++.h>
using namespace std;
int k[8];
int main(){
    string a;cin>>a;int t=0;bool m=1;
    for(int i=0;i<a.size();i++){
        if(a[i]==','){
            if(m){
                int s=t;
                while(a[s]!=','){s++;}
                if((s-t>=6 and s-t<=12)and k[0]+k[1]+k[2]>=2 and k[3]+k[4]+k[5]+k[6]>=1){
                    int s=t;
                    while(a[s]!=','){cout<<a[s];s++;}
                    cout<<endl;
                }
            }
            t=i+1;m=1;
            for(int p=0;p<=6;p++){k[p]=0;}
        }
        else{
            if(((a[i]>='A' and a[i]<='Z')||(a[i]>='a' and a[i]<='z')||(a[i]>='0' and a[i]<='9')||a[i]=='!'||a[i]=='@'||a[i]=='#'||a[i]=='$')){
                if(a[i]>='A' and a[i]<='Z'){
                    k[0]=1;//大写判断
                }else if(a[i]>='a' and a[i]<='z'){
                    k[1]=1;//小写判断
                }else if(a[i]>='0' and a[i]<='9'){
                    k[2]=1;//数字判断
                }else if(a[i]=='!'){
                    k[3]=1;//！
                }else if(a[i]=='@'){
                    k[4]=1;//@
                }else if(a[i]=='#'){
                    k[5]=1;//#
                }else if(a[i]=='$'){
                    k[6]=1;//$
                }
            }else{
                m=0;
            }
        }
    }
    if(m){
        int s=a.size();
        if((s-t>=6 and s-t<=12)and k[0]+k[1]+k[2]>=2 and k[3]+k[4]+k[5]+k[6]>=1){
            int s=t;
            while(s!=a.size()){cout<<a[s];s++;}
        }
    }
	return 0;
}