Compilare: user.cpp: In function ‘int main()’: user.cpp:15:29: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for (i=1; i<=n-(1<<j-1); i++) ^ user.cpp:16:50: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] a[i][j] = (v[a[i][j-1]] < v[a[i+(1<<j-1)][j-1]]) ? a[i][j-1] : a[i+(1<<j-1)][j-1]; ^ user.cpp:16:85: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] a[i][j] = (v[a[i][j-1]] < v[a[i+(1<<j-1)][j-1]]) ? a[i][j-1] : a[i+(1<<j-1)][j-1]; ^