func_code_string: #include <bits/stdc++.h>   using namespace std;   int i, j, k, l, x, y, z, m, n, ans, dir, s, f, current, p, q;   pair<int, int> a;   pair<int, pair<int, int> > spies[300000];   int main() {     scanf( %d %d %d %d , &n, &m, &s, &f);     for (i = 0; i < m; i++) {       scanf( %d %d %d , &x, &y, &z);       a = make_pair(y, z);       spies[i] = make_pair(x, a);     }     if (s > f)       dir = -1;     else       dir = 1;     current = s;     i = 0;     j = 1;     while (current != f) {       a = spies[i].second;       x = spies[i].first;       if (x == j) {         i++;         y = a.first;         z = a.second;         p = current;         q = current + dir;         if ((p >= y && p <= z) || (q >= y && q <= z)) {           printf( X );         } else {           current = current + dir;           if (dir == 1)             printf( R );           else             printf( L );         }       } else {         current = current + dir;         if (dir == 1)           printf( R );         else           printf( L );       }       j++;     }     return 0;   }   