#include <bits/stdc++.h> using namespace std; #define sz(x) (int)x.size() #define all(x) x.begin() , x.end() int check(int x){ string str = to_string(x); bool bl = 0; for(int i = 0;i<sz(str)-1;i++){ bl |= str[i] == '1' and str[i+1] == '3'; } return !bl; } void solve(){ int n,q; cin >> n >> q; int x; cin >> x; int ans = 0; for(int i = 0;i<=x;i++){ ans += check(i); } cout << ans << endl; } signed main(){ ios_base::sync_with_stdio(0);cin.tie(0); int testcase=1;//cin >> testcase; while(testcase--)solve(); cerr << 1000.0 * clock() / CLOCKS_PER_SEC << " ms" << endl; }