题解

因本人时间仓促，故报名了比赛没参加，以下是我的AC代码：

#include <bits/stdc++.h>
#define int long long
#define iostream() ios::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL);
using namespace std;
const int maxn = 1e6+7;
const int MAXN = maxn / 2;
signed main()
{
    iostream();
    string s;
    cin >> s;
    for (int i = 0; i < s.length(); i++)
    	if (s[i] == 't')
    		s[i] = 'w';
    cout << s;
 	return 0;
}