#include <stdio.h>
//第１回演習5 長すぎるかも

int maxodd(int a, int b, int c);
int main(void) {
	int a,b,c;
	scanf("%d %d %d",&a,&b,&c);
	printf("三個の正の整数を入力してください\n");
	if((a%2 == 0) && (b%2 == 0) && (c%2 == 0))
	printf("奇数が含まれていません\n");
	else
	printf("%d",maxodd(a,b,c));
	return 0;
}
int maxodd(int a, int b, int c){
	int ans ;
 if(a%2 == 0){
	if(b%2 == 0) ans = c;
	else if (c%2 == 0) ans =b;
	else{
	if(b>c) ans = b;
	else ans = c;}
}
 else if(b%2 == 0){
	if(a%2 == 0) ans = c;
	else if (c%2 == 0) ans =a;
	else{
	if(a>c) ans = a;
	else ans = c;}
}
 else if(c%2 == 0){
	if(b%2 == 0) ans = a;
	else if (a%2 == 0) ans = b;
	else{
	if(b>a) ans = b;
	else ans = a;}
}
else {
if ((a>b) &&(a>c)) ans=a;
else if ((b>a) && (b>c)) ans =b;
else ans =c;
}

return ans;
}