ABC151 をPythonで解く

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A~Cを解いた。

A

C =input()
ans = ord(C)
ans = chr(ans+1)
print(ans)

B

N,K,M = map(int,input().split())
A = [int(i) for i in input().split()]
ans = N*M - sum(A)
if ans >K:
    print(-1)
    exit()
print(max(ans,0))

C

N,M = map(int,input().split())
PS =[""]*N
PENALTY = 0
AC = 0
for m in range(M):
    p,s = map(str,input().split())
    p=int(p)-1
    if PS[p]!="AC" and s=="WA":
        PENALTY+=1
    elif PS[p]!="AC" and s=="AC":
        AC+=1
        PS[p]="AC"
print(AC,PENALTY)