Compilare: main.cpp: In member function 'bool Matcher::pairup(int)': main.cpp:76:32: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 76 | return r[l[u] = v] = u; main.cpp:78:32: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 78 | return r[l[u] = v] = u;