Compilare: user.cpp: In function ‘void calcFastLN()’: user.cpp:22:44: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] flLN[i][j] = getId(s[i][j])<<4 + getId(s[i][j+1]); ^ user.cpp:27:44: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] frLN[i][j] = getId(s[i][j])<<4 + getId(s[i][j-1]); ^ user.cpp: In function ‘int main()’: user.cpp:79:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.in","r",stdin); ^ user.cpp:80:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.out","w",stdout); ^ user.cpp:82:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld",&n); ^ user.cpp:83:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) scanf("%s\n",s[i]+1); ^