Compilare: user.cpp: In function ‘bool ok(long int, int, int)’: user.cpp:21:38: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(config&(1<<intre[i][j][k])==0) ^ user.cpp: In function ‘int main()’: user.cpp:90:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(g,"%d",S); ^ user.cpp:27:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^