Two Coins [AtCoder Beginner Contest 091 A]

https://beta.atcoder.jp/contests/abc091/tasks/abc091_a

解法

https://beta.atcoder.jp/contests/abc091/submissions/2225808

C≦A+Bなら買えるので、それを判定しよう。

int A, B, C;
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> A >> B >> C;
 
    if (C <= A + B) printf("Yes\n");
    else printf("No\n");
}