题解 | 舞萌时间到！
舞萌时间到！
https://www.nowcoder.com/practice/cef5fe464ca54a10ba1b4374f423f09c
s=input()
array=[0]
for i in s:
if i=='G':
array.append(1)
elif i=='P':
array.append(3)
elif i=='p':
array.append(2)
else:
array.append(0)
for i in range(1,len(array)):
array[i]=array[i]+array[i-1]
times=int(input())
for _ in range(times):
a,b=list(map(int,input().split()))
print(array[b]-array[a-1])