Compilare: user.cpp: In function ‘int main()’: user.cpp:34:16: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=(s[v1][j][2]+j*( s[v1][b-1][1]-s[v1][j][1] ) ) %mod; ^ user.cpp:34:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=(s[v1][j][2]+j*( s[v1][b-1][1]-s[v1][j][1] ) ) %mod; ^ user.cpp:34:48: warning: array subscript has type ‘char’ [-Wchar-subscripts] a=(s[v1][j][2]+j*( s[v1][b-1][1]-s[v1][j][1] ) ) %mod; ^ user.cpp:39:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[v2][j][1]=s[v2][j-1][1]+a; ^ user.cpp:39:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[v2][j][1]=s[v2][j-1][1]+a; ^ user.cpp:41:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[v2][j][2]=(s[v2][j-1][2]+a*j)%mod; ^ user.cpp:41:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[v2][j][2]=(s[v2][j-1][2]+a*j)%mod; ^ user.cpp:7:27: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nr.in","r",stdin); ^ user.cpp:8:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nr.out","w",stdout); ^ user.cpp:9:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:10:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&b); ^