import std;

void main () {
    int N = readln.chomp.to!int;
    int[] P = new int[](N);
    foreach (i; 0..N) {
        switch (readln.chomp) {
            case ("Yes"):
                P[i] = 1; continue;
            case ("No"):
                P[i] = 0; continue;
            default:
                enforce(0, "invalid input");
        }
    }

    int sum = 0;
    foreach (i; 0..N) {
        if (i == 0) {
            if (P[i] == 1) writeln("Yes");
            if (P[i] == 0) writeln("No");
            sum += P[i];
            continue;
        }
        sum += P[i];

        if (sum == i+1 || sum == 0) {
            writeln("Yes");
        } else {
            writeln("No");
        }
    }
}

void read(T...)(string S, ref T args) {
    auto buf = S.split;
    foreach (i, ref arg; args) {
        arg = buf[i].to!(typeof(arg));
    }
}