Compilare: main.cpp: In function 'int euler(int)': main.cpp:20:13: warning: unused variable 'muchie' [-Wunused-variable] int muchie=v[nod].back().second; ^~~~~~ main.cpp:55:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:73:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<afla_vecini[mch[i].y].size(); j++) ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:60:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tester.in","r",stdin); ^ main.cpp:61:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("tester.out","w",stdout); ^ main.cpp:63:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:67:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&mch[i].x,&mch[i].y); ^