Compilare: main.cpp: In member function 'void SegmentTree::cleannode(int, int, int)': main.cpp:45:11: warning: unused variable 'mid' [-Wunused-variable] int mid = (from + to) / 2; ^~~ main.cpp: In function 'void dfs(int, int)': main.cpp:97:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp:109:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void computepath(int, int)': main.cpp:127:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp:134:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~