Compilare: user.cpp: In function ‘int main()’: user.cpp:41:28: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if (i & (1<<j) != 0) ^ user.cpp:36:23: warning: unused variable ‘sol’ [-Wunused-variable] int j, ct, minim, sol = 0; ^ user.cpp:27:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d%d", &n, &m); ^ user.cpp:32:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d%d%d", &x, &y, &c); ^