Compilare: user.cpp: In function ‘int main()’: user.cpp:20:17: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if (A[1 - i & 1][j - 1] == A[i & 1][j] && A[i & 1][j - 1] != A[i & 1][j] && A[1 - i & 1][j] != A[i & 1][j]) ^ user.cpp:20:89: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] if (A[1 - i & 1][j - 1] == A[i & 1][j] && A[i & 1][j - 1] != A[i & 1][j] && A[1 - i & 1][j] != A[i & 1][j]) ^ user.cpp:21:55: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] D[i & 1][j] += min(min(D[i & 1][j - 1], D[1 - i & 1][j]), D[1 - i & 1][j - 1]); ^ user.cpp:21:73: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] D[i & 1][j] += min(min(D[i & 1][j - 1], D[1 - i & 1][j]), D[1 - i & 1][j - 1]); ^ user.cpp:8:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tsah.in", "r", stdin); ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tsah.out", "w", stdout); ^ user.cpp:11:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ user.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:18:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%1d", &A[i & 1][j]); ^