Compilare: user.cpp: In function ‘int Solve(int)’: user.cpp:10:31: warning: suggest parentheses around comparison in operand of ‘^’ [-Wparentheses] if(a[1][j]^toggleFirst==1) ^ user.cpp:14:46: warning: suggest parentheses around comparison in operand of ‘^’ [-Wparentheses] if(a[i][j]^column[toggleFirst][j]==1) ^ user.cpp: In function ‘int main()’: user.cpp:67:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("becuri.in","r",stdin); ^ user.cpp:68:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("becuri.out","w",stdout); ^ user.cpp:70:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:73:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^