e837. P4. 字母排列 (Letters) -- 2019年08月TOI新手同好會 | From: [203.72.178.1] | 發表日期 : 2024-03-14 17:44

#include <bits/stdc++.h>

using namespace std;

 

int main()

{

int count=1, length=1,pos;

string s;

cin>>s;

for(int i=1; i<s.length(); i++){

if(s[i]-s[i-1]==1) count++;

else count=1;

if(count>=length) {length=count; pos=i-count+1;} 

} 

    cout<<length<<" "<<s.substr(pos, length)<<"\n";

}