Compilare: main.cpp: In function 'int main()': main.cpp:23:17: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(x<=i and i<=y or ((i<=s and x<=s) or (i>=s and y>=s) or (i>=s and y>=s))) ~~~~~^~~~~~~~ main.cpp:40:27: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(!(x<=j and j<=y or ((i<=s and x<=s) or (i>=s and y>=s) or (i>=s and y>=s)))) ~~~~~^~~~~~~~ main.cpp:12:42: warning: unused variable 'val3' [-Wunused-variable] int n, m, s, f, i, x, y, val1, val2, val3, j, valf; ^~~~