Compilare: main.cpp: In function 'int get_stare(int, int)': main.cpp:33:25: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses] return (v[x]<<1)&((1<<k)-1)|1; ~~~~~~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:97:33: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses] stare = (val<<1)&((1<<k)-1)|1; ~~~~~~~~^~~~~~~~~~~ main.cpp:45:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d%d",&n,&k,&a,&b); ^