제출 #1266285

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1266285		islam_2010	Miners (IOI07_miners)	C++20	0 / 100	5 ms	580 KiB

miners

#include <bits/stdc++.h>
#define int long long
using namespace std;



signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin >> n;
    string s;
    cin >> s;
    if(n == 1){
        return cout << 1, 0;
    }if(n == 2){
        if(s[0] == s[1]){
            return cout << 1, 0;
        }else {
            return cout << 2, 0;
        }
    }
    int ans = 1;
    if(s[0] == s[1]){
        ans += 1;
    }else {
        ans += 2;
    }
    for(int i = 2; i < n; i++){
        set<int> st;
        for(int j = i-2; j <= i; j++){
            st.insert(s[j]);
        }ans += st.size();

    }cout << ans << endl; 
    
    
    return 0;
}

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