Compilare: main.cpp: In function 'int main()': main.cpp:30:33: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a[j]>=i-j) ^ main.cpp:37:33: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(2*b[j]>=i-j) ^