题解 | 舞萌时间到！

#include <iostream>
#include<vector>
#include<string>
using namespace std;

int main() {
    vector<int>s;
    vector<int>score;
    string a;
    int q,b,c,d,sum;
    cin>>a;
    for(char e:a){
        if(e=='P')d=3;
        if(e=='p')d=2;
        if(e=='G')d=1;
        if(e=='g')d=0;
        if(e=='m')d=0;
        s.push_back(d);
    }
    score.push_back(s[0]);
    for(int i=0;i<s.size();i++){
        score.push_back(s[i]+score[i]);
    }
    cin>>q;
    for(int i=0;i<q;i++){
        cin>>b>>c;
        sum=score[c]-score[b-1];
        cout<<sum<<endl;
    }
}