1 #include<bits/stdc++.h> 2 3 using namespace std; 4 5 int read(){ 6 int x = 0,flag = 1; 7 char ch = getchar(); 8 while(!isdigit(ch)){ 9 if(ch == '-'){ 10 flag = -1; 11 } 12 ch = getchar(); 13 } 14 while(isdigit(ch)){ 15 x = (x<<3) + (x<<1) + (ch^48); 16 ch = getchar(); 17 } 18 return x*flag; 19 } 20 21 int main(){ 22 int x = read(); 23 cout << x << endl; 24 return 0; 25 }