Compilare: user.cpp:3:26: warning: multi-character character constant [-Wmultichar] int N, A, B, C, i = 1, v['ॆ']; ^ user.cpp:5:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main() ^ user.cpp: In function ‘int main()’: user.cpp:9:60: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(*v = B; i < N; v[i] = (1LL * v[i++ - 1] * A + B) % C); ^ user.cpp:15:63: warning: operation on ‘i’ may be undefined [-Wsequence-point] for(i = B = 0; i - N; b[v[i++] >> A * 8 % C].push(v[i])); ^