Problem:
Score : 100 points

Problem Statement

Ringo is giving a present to Snuke.

Ringo has found out that Snuke loves yakiniku (a Japanese term meaning grilled meat. yaki: grilled, niku: meat). He supposes that Snuke likes grilled things starting with YAKI in Japanese, and does not like other things.

You are given a string S representing the Japanese name of Ringo's present to Snuke. Determine whether S starts with YAKI.

Constraints

1 \leq |S| \leq 10

S consists of uppercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If S starts with YAKI, print Yes; otherwise, print No.

Sample Input 1

YAKINIKU

Sample Output 1

Yes

YAKINIKU starts with YAKI.

Sample Input 2

TAKOYAKI

Sample Output 2

No

TAKOYAKI (a Japanese snack. tako: octopus) does not start with YAKI.

Sample Input 3

YAK

Sample Output 3

No

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <cassert>
#include <queue>
#include <ctime>
#include <string>
#include <cstring>
#include <random>
#define mp make_pair
#define pb push_back
#define NAME ""
#define y1 y1_423
#define list lista

using namespace std;

typedef long long ll;
typedef long double ld;

template<typename T>
ostream& operator << (ostream& cout, const vector<T> &a) {
	if ((int)a.size() == 0) {
		return (cout << "()");
	}
	cout << "(" << a[0];
	for (int i = 1; i < (int)a.size(); i++) {
		cout << "; " << a[i];
	}
	return (cout << ")");
}

template<typename T>
ostream& operator << (ostream& cout, const set<T> &a) {
	if ((int)a.size() == 0) {
		return (cout << "{}");
	}
	auto it = a.begin();
	cout << "{" << *it;
	++it;
	for (; it != a.end(); ++it) {
		cout << "; " << *it;
	}
	return (cout << "}");
}

template<typename T>
ostream& operator << (ostream& cout, const multiset<T> &a) {
	if ((int)a.size() == 0) {
		return (cout << "{}");
	}
	auto it = a.begin();
	cout << "{" << *it;
	++it;
	for (; it != a.end(); ++it) {
		cout << "; " << *it;
	}
	return (cout << "}");
}

template<typename T1, typename T2>
ostream& operator << (ostream& cout, const pair<T1, T2> &a) {
	return cout << "(" << a.first << "; " << a.second << ")";
}

random_device gen;
mt19937 rnd(gen());

const int nmax = 2000 * 1000;
const int inf = 2000 * 1000 * 1000;
const ll infl = 1000ll * 1000ll * 1000ll * 1000ll * 1000ll * 1000ll;
const int mod = 1000 * 1000 * 1000 + 7;
const ld pi = acos(-1.0);

int main() {
	//freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
	//freopen(NAME".in", "r", stdin);freopen(NAME".out", "w", stdout);
    string s;
    getline(cin, s);
    cout << (s.length() >= 4 && s[0] == 'Y' && s[1] == 'A' && s[2] == 'K' && s[3] == 'I' ? "Yes\n" : "No\n");
	return 0;
}