func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int N = 10e18;   map<long long, long long> mp;   int main() {     int t;     cin >> t;     long long int type, u, v, w;     while (t--) {       scanf( %lld , &type);       if (type == 1) {         scanf( %lld%lld%lld , &u, &v, &w);         while (u != v) {           if (u > v)             mp[u] += w, u /= 2;           else             mp[v] += w, v /= 2;         }       } else {         scanf( %lld%lld , &u, &v);         long long ans = 0;         while (u != v) {           if (u > v)             ans += mp[u], u /= 2;           else             ans += mp[v], v /= 2;         }         printf( %lld n , ans);       }     }     return 0;   }   