#include <bits/stdc++.h>   using namespace std;   template <class T>   bool uin(T &a, T b) {     return a > b ? (a = b, true) : false;   }   template <class T>   bool uax(T &a, T b) {     return a < b ? (a = b, true) : false;   }   int n, a, b;   void solve() {     cin >> n >> a >> b;     string s;     cin >> s;     a--;     b--;     if (s[a] == s[b]) {       cout << 0;     } else {       cout << 1;     }   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t = 1;     while (t--) {       solve();     }   }   