Luck and Love

8
I 160 50.5 60.0
I 165 30.0 80.5
I 166 10.0 50.0
I 170 80.5 77.5
Q 150 166 10.0 60.0
Q 166 177 10.0 50.0
I 166 40.0 99.9
Q 166 177 10.0 50.0
0

80.5
50.0
99.9

//171MS	5900K
#include<stdio.h>
#include<algorithm>
#define M 1007
#define eps 1e-4
using namespace std;
char s[7];
struct Sub_Tree
{
    int left,right,ans;
    int mid(){return (left+right)>>1;}
};
struct Tree
{
    int left,right;
    int mid(){return (left+right)>>1;}
    Sub_Tree subtree[4*M];
}tree[M];

void build_subtree(int l,int r,int i,int fa)
{
    tree[fa].subtree[i].left=l;
    tree[fa].subtree[i].right=r;
    tree[fa].subtree[i].ans=-1;
    if(l==r)return;
    int mid=(l+r)>>1;
    build_subtree(l,mid,i<<1,fa);
    build_subtree(mid+1,r,i<<1|1,fa);
}

void build(int l,int r,int i)
{
    tree[i].left=l;tree[i].right=r;
    build_subtree(0,1000,1,i);
    if(l==r)return;
    int mid=(l+r)>>1;
    build(l,mid,i<<1);
    build(mid+1,r,i<<1|1);
}

void up(int i,int fa)
{
    tree[fa].subtree[i].ans=max(tree[fa].subtree[i<<1].ans,tree[fa].subtree[i<<1|1].ans);
}

void update_subtree(int a,int l,int i,int fa)
{
    if(tree[fa].subtree[i].left==tree[fa].subtree[i].right)
    {
        tree[fa].subtree[i].ans=max(tree[fa].subtree[i].ans,l);
        return;
    }
    int mid=tree[fa].subtree[i].mid();
    if(a<=mid)update_subtree(a,l,i<<1,fa);
    else update_subtree(a,l,i<<1|1,fa);
    up(i,fa);
}

void update(int h,int a,int l,int i)
{
    update_subtree(a,l,1,i);
    if(tree[i].left==tree[i].right)return;
    int mid=tree[i].mid();
    if(h<=mid)update(h,a,l,i<<1);
    else update(h,a,l,i<<1|1);
}

int query_subtree(int a1,int a2,int i,int fa)
{
    if(tree[fa].subtree[i].left>=a1&&tree[fa].subtree[i].right<=a2)return tree[fa].subtree[i].ans;
    int mid=tree[fa].subtree[i].mid();
    int maxx=-1;
    if(a1<=mid)maxx=max(maxx,query_subtree(a1,a2,i<<1,fa));
    if(mid<a2)maxx=max(maxx,query_subtree(a1,a2,i<<1|1,fa));
    return maxx;
}

int query(int h1,int h2,int a1,int a2,int i)
{
    if(tree[i].left>=h1&&tree[i].right<=h2)return query_subtree(a1,a2,1,i);
    int mid=tree[i].mid();
    int maxx=-1;
    if(h1<=mid)maxx=max(maxx,query(h1,h2,a1,a2,i<<1));
    if(mid<h2)maxx=max(maxx,query(h1,h2,a1,a2,i<<1|1));
    return maxx;
}

int main()
{
    int t;
    while(scanf("%d",&t),t)
    {
        build(100,200,1);
        int h,h1,h2;
        double a,a1,a2,l;
        while(t--)
        {
            scanf("%s",s);
            if(s[0]=='I')
            {
                scanf("%d%lf%lf",&h,&a,&l);
                update(h,int(a*10),int(l*10),1);
            }
            else
            {
                scanf("%d%d%lf%lf",&h1,&h2,&a1,&a2);
                if(h1>h2)swap(h1,h2);
                if(a1>a2)swap(a1,a2);
                int maxx=query(h1,h2,int(a1*10),int(a2*10),1);
                if(maxx<0)printf("-1\n");
                else printf("%.1f\n",maxx/10.0);
            }
        }
    }
    return 0;
}