题解 | 舞萌时间到！

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])