1 #include <bits/stdc++.h> 2 typedef long long ll; 3 using namespace std; 4 #define _for(i,a,b) for(int i = (a);i < b;i ++) 5 #define _rep(i,a,b) for(int i = (a);i > b;i --) 6 #define INF 0x3f3f3f3f 7 #define MOD 1000000007 8 #define pb push_back 9 #define maxn 100003 10 inline ll read() 11 { 12 ll ans = 0; 13 char ch = getchar(), last = ' '; 14 while(!isdigit(ch)) last = ch, ch = getchar(); 15 while(isdigit(ch)) ans = (ans << 1) + (ans << 3) + ch - '0', ch = getchar(); 16 if(last == '-') ans = -ans; 17 return ans; 18 } 19 inline void write(ll x) 20 { 21 if(x < 0) x = -x, putchar('-'); 22 if(x >= 10) write(x / 10); 23 putchar(x % 10 + '0'); 24 } 25 struct P 26 { 27 int l; 28 int r; 29 bool operator <(const P &x) const 30 { 31 return r<x.l; 32 } 33 }; 34 int N; 35 set<P> s; 36 int main() 37 { 38 N = read(); 39 while(N--) 40 { 41 string op; 42 cin >> op; 43 if(op=="A") 44 { 45 P tp; 46 tp.l = read(); 47 tp.r = read(); 48 int ans = 0; 49 auto it = s.find(tp); 50 while(it != s.end()) 51 { 52 ans ++; 53 s.erase(it); 54 it = s.find(tp); 55 } 56 s.insert(tp); 57 write(ans); 58 printf(" "); 59 } 60 else 61 { 62 write(s.size()); 63 printf(" "); 64 } 65 } 66 return 0; 67 }