Compilare: main.cpp: In function 'void checkRMQ()': main.cpp:107:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(auto i: node) ^~~ main.cpp:109:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fout << '\n'; ^~~~ main.cpp: In function 'void computeRMQ()': main.cpp:129:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p > rmq[node].size()) ~~^~~~~~~~~~~~~~~~~~ main.cpp:132:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p > rmq[up].size()) ~~^~~~~~~~~~~~~~~~ main.cpp:132:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(p > rmq[up].size()) ^~ main.cpp:134:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' rmq[node].push_back(rmq[up][p-1]); ^~~ main.cpp:127:18: warning: unused variable 'len' [-Wunused-variable] for(int p=1, len; p<=20; p++){ ^~~ main.cpp: In function 'int LCA(int, int)': main.cpp:147:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt < rmq[node1].size()) ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:160:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt < rmq[node1].size()) ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int, int)': main.cpp:193:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt < rmq[crt].size()) ~~~~^~~~~~~~~~~~~~~~~ main.cpp:206:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cnt < rmq[crt].size()) ~~~~^~~~~~~~~~~~~~~~~