Compilare: main.cpp: In function 'int main()': main.cpp:30:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 30 | if (index_of[0][i] < index_of[0][j] && index_of[1][i] > index_of[1][j] || | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:29:8: warning: unused variable 'x' [-Wunused-variable] 29 | int x = v[i].first, y = v[j].first; | ^ main.cpp:29:24: warning: unused variable 'y' [-Wunused-variable] 29 | int x = v[i].first, y = v[j].first; | ^