kangaaroo.cpp

#include <bits/stdc++.h>

using namespace std;


/*
 * Complete the 'kangaroo' function below.
 *
 * The function is expected to return a STRING.
 * The function accepts following parameters:
 *  1. INTEGER x1
 *  2. INTEGER v1
 *  3. INTEGER x2
 *  4. INTEGER v2
 */

string kangaaroo(int x1,int v1,int x2, int v2){
    if(x1==x2)
    return "YES";
    if((x2>x1 && v2>v1) || (x1>x2 && v1>v2))
    return "NO";
    else{

    
    while(x1>x2){
        x1+=v1;
        x2+=v2;
    }
    while(x2>x1){
        x1+=v1;
        x2+=v2;
    }
    if(x1==x2)
    return "YES";
    else
    return "NO";
        }
}
int main(){
    int x1,v1,x2,v2;
    cin>>x1>>v1;
    cin>>x2>>v2;
    string result = kangaaroo(x1,v1,x2,v2);
    cout<<result;
    
}