https://codeforces.ml/contest/1379
晚安
#include<cstdio>
#include<cstring>
#include<cmath>
#include<cstdlib>
#include<cctype>
#include<ctime>
#include<iostream>
#include<string>
#include<map>
#include<queue>
#include<stack>
#include<set>
#include<vector>
#include<iomanip>
#include<list>
#include<bitset>
#include<sstream>
#include<fstream>
#include<complex>
#include<algorithm>
#if __cplusplus >= 201103L
#include <unordered_map>
#include <unordered_set>
#endif
#define ll long long
using namespace std;
const int INF = 0x3f3f3f3f;
int a[1000010]; string s1="abacaba";
bool check(string &s){
int cnt=0;
//cout<<v<<endl;
for(int i=0;i+7<=s.size();i++){
if(s1==s.substr(i,7)) cnt++;
// cout<<s.substr(i,7)<<" "<<cnt<<endl;
}
return cnt==1;
}
int main(){
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
int t;
cin>>t;
while(t--){
int n;
cin>>n;
string s;
cin>>s;
bool flag=0,flag2=0;
for(int i=0;i+7<=s.size();i++){
string ss=s;
int k=i;
bool flag1=0;
//cout<<i<<endl;
for(int j=0;j<s1.size();j++){
if(s1[j]==s[k]||s[k]=='?') ss[k]=s1[j],k++;
else{
flag1=1;
break;
}
}
// cout<<s<<endl;
if(!flag1&&(check(ss))){
for(int j=0;j<n;j++){
if(ss[j]=='?') ss[j]='z';
}
cout<<"Yes"<<endl;
flag2=1;
cout<<ss<<endl;
break;}
}
if(!flag2) cout<<"No"<<endl;
}
return 0;
}
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