Compilare: main.cpp: In function 'void euler()': main.cpp:11:9: warning: unused variable 'i' [-Wunused-variable] int i; ^ main.cpp: In function 'int main()': main.cpp:62:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<sol.size(); i++) ~^~~~~~~~~~~ main.cpp:71:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<aux.size(); j++) ~^~~~~~~~~~~ main.cpp:71:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=0; j<aux.size(); j++) ^~~ main.cpp:73:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' aux.clear(); ^~~