func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 2e5 + 5;   const int oo = 1e9 + 5;   struct seg {     seg(int a, int x, int y) : A(a), first(x), second(y) {}     int A;     int first;     int second;   };   bool operator<(const seg &M, const seg &N) { return M.A < N.A; }   set<seg> segs;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(NULL);     int N, Q;     scanf( %d %d n , &N, &Q);     segs.insert(seg(0, 0, 0));     for (int i = 0; i < Q; ++i) {       int x, y;       char c;       scanf( %d %d %c n , &x, &y, &c);       set<seg>::iterator it = segs.upper_bound(seg(x, 0, 0));       --it;       if (x == it->A) {         printf( 0 n );         continue;       }       int fa = it->A;       int fy = it->second;       int fx = it->first;       if (c ==  U ) {         printf( %d n , y - it->second);         segs.insert(seg(x, x, fy));       } else {         printf( %d n , x - it->first);         segs.erase(it);         segs.insert(seg(fa, fx, y));         segs.insert(seg(x, fx, fy));       }     }     return 0;   }   