Eroare de compilare: main.cpp: In function 'void build(int, int, int, long long int)': main.cpp:41:17: error: 'vl' was not declared in this scope sgt[nd].val = vl - aux[le]; } ^~ main.cpp:44:26: error: 'vl' was not declared in this scope build(nd << 1, le, md, vl); ^~ main.cpp: In function 'int main()': main.cpp:89:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("invtree.in", "r", stdin); ^ main.cpp:90:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("invtree.out", "w", stdout); ^ Non zero exit status: 1