#include using namespace std; #ifdef LOCAL #include "settings/debug.cpp" #define _GLIBCXX_DEBUG #else #define Debug(...) void(0) #endif #define rep(i, n) for (int i = 0; i < (n); ++i) using ll = long long; using ull = unsigned long long; int main() { ll x, y, z; cin >> x >> y >> z; ll ans = z; if (x <= z) ans--; if (y <= z) ans--; cout << ans << endl; return 0; }