Compilare: main.cpp: In function 'int main()': main.cpp:27:50: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (a[j].st < a[i].st && a[i].st < a[j].dr && a[j].dr < a[i].dr || a[i].st < a[j].st && a[j].st < a[i].dr && a[i].dr < a[j].dr) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~