ABC046A - AtCoDeerくんとペンキ / AtCoDeer and Paint Cans
問題:A - AtCoDeerくんとペンキ / AtCoDeer and Paint Cans
#include <iostream> #include <set> using namespace std; int main(void) { int a, b, c; set<int> se; cin.tie(0); ios::sync_with_stdio(false); cin >> a; cin >> b; cin >> c; se.insert(a); se.insert(b); se.insert(c); cout << se.size() << "\n"; return 0; }