#define ZAD1(a,b,c) ((a)+(b)+(c))
#define ZAD2(a,b) ((a)>(b)?(a):(b))
#define ZAD3(x,n) do{for((x)=0;(x)<(n);(x)++)}while(0)
#define ZAD4(x) do{if(x%2==0) ? 1:0}