Compilare: user.cpp: In function ‘void solve(int, int, int, int)’: user.cpp:112:16: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:243:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eq.out","w",stdout); ^ user.cpp: In member function ‘void Buffer::reFill()’: user.cpp:64:43: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(&data[0], 1, dim, stdin); ^ user.cpp: In constructor ‘Buffer::Buffer(std::string, int)’: user.cpp:24:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(name.c_str(), "r", stdin); ^ user.cpp: In function ‘void solve(int, int, int, int)’: user.cpp:129:39: warning: array subscript is above array bounds [-Warray-bounds] dp_max[mid][7] = dp_min[mid][7] = 0; ^ user.cpp:129:22: warning: array subscript is above array bounds [-Warray-bounds] dp_max[mid][7] = dp_min[mid][7] = 0; ^ user.cpp:149:47: warning: array subscript is above array bounds [-Warray-bounds] dp_max[i][7] = max(dp_max[i + 1][7], v[i] - dp_min[i][1]); ^ user.cpp:149:24: warning: array subscript is above array bounds [-Warray-bounds] dp_max[i][7] = max(dp_max[i + 1][7], v[i] - dp_min[i][1]); ^ user.cpp:150:47: warning: array subscript is above array bounds [-Warray-bounds] dp_min[i][7] = min(dp_min[i + 1][7], v[i] - dp_max[i][1]); ^ user.cpp:150:24: warning: array subscript is above array bounds [-Warray-bounds] dp_min[i][7] = min(dp_min[i + 1][7], v[i] - dp_max[i][1]); ^ user.cpp:211:42: warning: array subscript is above array bounds [-Warray-bounds] maxi = max(maxi, dp_max[ll][7] + dp_max[rr][1]); ^ user.cpp:217:42: warning: array subscript is above array bounds [-Warray-bounds] mini = min(mini, dp_min[ll][7] + dp_min[rr][1]); ^