小装一下（

#include <iostream>
#include <cstdio>
using namespace std;
int a[100005];
int read(){
	char c = getchar();
	int x = 0, f = 1;
	while(!isdigit(c)){
		if(c == '-') f = -f;
		c = getchar();
	}while(isdigit(c)){
		x = x * 10 + c - '0';
		c = getchar();
	}return x * f;
}
int main(){
	printf("%d", read());

	return 0;
}