L2-013. 红色警报

#include<bits/stdc++.h>

using namespace std;
const int maxn = 1000+10;
int v[maxn];
int sz = 1;
const int maxh = 20000+10;
int h[maxh];
const int TT = 10000;
void Insert(int vv)
{
    int t = sz++;
    v[t] = vv;
    h[v[t]+TT] = t;
    while(t > 1)
    {
        if(v[t] < v[t/2])
        {
            swap(v[t],v[t/2]);
            swap(h[v[t/2]+TT],h[v[t]+TT]);
            t /= 2;
        }
        else break;
    }
}

int main(void)
{
    int N,M;
    cin>>N>>M;
    for(int i= 0;i < N; ++i)
    {
        int a;
        scanf("%d",&a);
        Insert(a);
    }
    getchar();
    while(M--)
    {
        bool yes = false;
        string s;
        getline(cin,s);
        stringstream ss(s);
        int a,b;
        string S;
        ss>>a;
        ss>>S;
        if(S == "and")
        {
            ss>>b;
//            cout<<a<<" "<<b<<endl;
            a += TT;
            b += TT;
            if(h[a]/2 == h[b]/2)
                yes = true;
        }
        else
        {
            ss>>S;
            if(S == "a")
            {
                ss>>s;
                ss>>s;
                ss>>b;
                a += TT;
                b += TT;
                if(h[a]/2 == h[b])
                    yes = true;
            }
            else {
                ss >>S;
                if(S == "root")
                {
                    a += TT;
                    if(h[a] == 1)
                        yes = true;
                }
                else
                {
                   ss>>S;
                   ss>>b;
//                   cout<<a<<" "<<b<<endl;
                   a += TT;
                   b += TT;
                   if(h[a] == h[b]/2)
                    yes = true;
                }

            }

        }

        if(yes)
            cout<<"T"<<endl;
        else
            cout<<"F"<<endl;
    }


    return 0;
}