Submission #63014822

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Source Code Expand

#include<bits/stdc++.h>
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
namespace IO{
    template<typename T>
    void read(T &x){
        char ch=getchar();int fl=1;x=0;
        while(ch>'9'||ch<'0'){if(ch=='-')fl=-1;ch=getchar();}
        while(ch<='9'&&ch>='0'){x=x*10+ch-48;ch=getchar();}
        x*=fl;
    }
    template<typename T,typename ...Args>
    void read(T &x,Args& ...args){
        read(x);read(args...);
    }
    template <typename _Tp>
    void write(_Tp x) {
        if(x<0) x=(~x+1),putchar('-');
        if(x>9) write(x/10);
        putchar(x%10+'0');
    }
}
using namespace std;
using namespace IO;
const int N=2e5+5,mod=998244353;
int n;
string s;
set<int> S;
signed main() {
	cin>>s;n=s.size();
	s=" "+s;
	for(int i=1;i<=n;i++) {
		if(s[i]=='W' && s[i+1]=='A') S.insert(i);
	} 
	while(!S.empty()) {
		int p=(*S.begin());
		s[p]='A'; s[p+1]='C';
		if(s[p-1]=='W') S.insert(p-1);
		S.erase(p);
		
	}
	for(int i=1;i<=n;i++) printf("%c",s[i]);
    return 0;
}

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