abc198のメモ - Qiita

N = int(input()) ans = 0 if N<2: ans = 0 else: ans = N - 1 print(ans) N = input() L = len(N) for i in range(L): if int(N[-1]) == 0: N = N[0:L-i-1] for i in range(int(len(N)/2)): if N[i] != N[len(N)-i-1]: print("No") exit() print("Yes") import math R, X, Y = [int(a) for a in input().split()] dis = math.sqrt(X**2 + Y**2) if dis < R: print(2) elif dis == R: print(1) else: print(math.ceil(dis/R)) impo