Compilare: user.cpp: In function ‘void BFS()’: user.cpp:21:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^ user.cpp:23:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] s1[G[nod][i]]= max(s1[G[nod][i]], s1[nod] + v[nod]); ^ user.cpp:23:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] s1[G[nod][i]]= max(s1[G[nod][i]], s1[nod] + v[nod]); ^ user.cpp: In function ‘void BFSi()’: user.cpp:39:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<iG[nod].size();i++) ^ user.cpp:41:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] s2[iG[nod][i]] = min(s2[iG[nod][i]], s2[nod] - v[iG[nod][i]]); ^ user.cpp:41:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] s2[iG[nod][i]] = min(s2[iG[nod][i]], s2[nod] - v[iG[nod][i]]); ^ user.cpp:41:72: warning: array subscript has type ‘char’ [-Wchar-subscripts] s2[iG[nod][i]] = min(s2[iG[nod][i]], s2[nod] - v[iG[nod][i]]); ^ user.cpp: In function ‘int main()’: user.cpp:54:18: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d",&n); ^ user.cpp:56:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d",&v[i]); ^ user.cpp:51:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pm2.in","r",stdin); ^ user.cpp:52:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pm2.out","w",stdout); ^ user.cpp:54:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:56:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ user.cpp:60:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ user.cpp:66:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nr); ^