Compilare: main.cpp: In function 'int main()': main.cpp:30:15: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if((i>>j)&1==1) { ~^~~ main.cpp:15:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d",&n,&m); ^ main.cpp:17:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d",&v[i],&a[i][0]); ^ main.cpp:19:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d",&a[i][j]); ^ main.cpp:22:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d",&pret[i]); ^