Compilare: main.cpp: In function 'void dfs(int)': main.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vec[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~ main.cpp:21:13: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(it = M[vec[nod][i]].begin(); it != M[vec[nod][i]].end(); it++) ^~~ main.cpp:23:24: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' M[vec[nod][i]].clear(); ^ main.cpp: In function 'int main()': main.cpp:47:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 1; i <= N; i++) ^~~ main.cpp:49:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fclose(f); ^~~~~~ main.cpp:52:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 1; i <= N; i++) ^~~ main.cpp:54:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' fclose(g); ^~~~~~ main.cpp:40:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d", &N); ^ main.cpp:43:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d", &x, &y); ^ main.cpp:48:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d", &c[i]); ^ main.cpp: In function 'void dfs(int)': main.cpp:33:15: warning: 'cmaxim' may be used uninitialized in this function [-Wmaybe-uninitialized] cmax[nod] = cmaxim; ~~~~~~~~~~^~~~~~~~