Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:19:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < G[nod].size();i++){ ^ user.cpp:25:68: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = ind,pas = 0;G[nod][i] != tata && pas < G[nod].size();i = (i + 1) % G[nod].size(),pas++){ ^ user.cpp: In function ‘int main()’: user.cpp:81:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < euler.size() - 1;i++){ ^ user.cpp:91:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < euler.size();i++){ ^ user.cpp:67:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^ user.cpp:71:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&K); ^ user.cpp:73:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&val); ^ user.cpp:88:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&x,&y,&t); ^