#include <iostream> #include <algorithm> #include <iomanip> #include <map> #include <set> #include <queue> #include <stack> #include <numeric> #include <bitset> #include <cmath> static const int MOD = 1000000007; using ll = long long; using u32 = uint32_t; using namespace std; template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208; int main() { ll x, y, z; cin >> x >> y >> z; ll ans = z; if(x <= z) ans--; if(y <= z) ans--; cout << ans << "\n"; return 0; }