Compilare: user.cpp: In function ‘void calc_cmmdc(int)’: user.cpp:49:89: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] m_cmmdc[lungime][i][j] = cmmdc(m_cmmdc[lungime][i][j], m_cmmdc[lungime-1][i + 1<<(lungime-1)][j]); ^ user.cpp:50:92: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] m_cmmdc[lungime][i][j] = cmmdc(m_cmmdc[lungime][i][j], m_cmmdc[lungime-1][i][j + 1<<(lungime-1)]); ^ user.cpp:51:89: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] m_cmmdc[lungime][i][j] = cmmdc(m_cmmdc[lungime][i][j], m_cmmdc[lungime-1][i + 1<<(lungime-1)][j + 1<<(lungime-1)]); ^ user.cpp:51:109: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] m_cmmdc[lungime][i][j] = cmmdc(m_cmmdc[lungime][i][j], m_cmmdc[lungime-1][i + 1<<(lungime-1)][j + 1<<(lungime-1)]); ^ user.cpp: In function ‘void read()’: user.cpp:32:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &m, &k, &q); ^ user.cpp:37:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i][j]); ^ user.cpp: In function ‘void solve()’: user.cpp:127:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^