
import std.algorithm;
import std.array;
import std.range;
import std.conv;
import std.stdio;
import std.string;
import std.typecons;

alias FairyPos = Tuple!(int,int);

void main(){
    auto inputs = readln.chomp.split.map!(to!int);
    auto a = inputs[0];
    auto b = inputs[1];
    auto c = inputs[2];
    string answer;
    if(c <= a + b){
        answer = "Yes";
    }else{
        answer = "No";
    }
    writeln(answer);
}
