Compilare: user.cpp: In function ‘void solve()’: user.cpp:40:16: warning: ‘memset’ used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args] memset(v, N, 0); ^ user.cpp: At global scope: user.cpp:80:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main() ^