在第二个捆绑测试点一直卡住，卡在了Judging状态

#include<iostream>
#include<vector>
using namespace std;
int main(){
    string s;
    cin>>s;
    int m = 0;
    vector<int> count(27,0);
    for(long long i = 0;i < s.length();i++){
        count[s[i] - 97]++;
    }
    for(int i = 0;i < 26;i++){
        m = max(m,count[i]);
    }
    cout<<m;
    return 0;
}