Submission #1874947

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Source Code Expand

def solve():
    s = input()
    C_index, F_index = -1, -1
    for i, c in enumerate(s):
        if c == "C" and C_index == 0:
            C_index = i
        if c == "F":
            F_index = i
    if C_index < F_index and C_index > -1 and F_index > -1:
        print("Yes")
    else:
        print("No")
        
solve()

Submission Info

Judge Result