#include<bits/stdc++.h>
using namespace std;
#define mod (int)(1e6+3)
//#define s first
//#define e second
long long n,ans,res;
int s[1000001],t[1000001];
long long r[1000001];
bool f[1000001];
struct task{
    int s,e,i;
    bool operator < (const task x)const{
        return s<x.s;
    }
};
inline int read(){
    int x=0;
    char c=getchar();
    while(!isdigit(c))c=getchar();
    while(isdigit(c))x=(x<<1)+(x<<3)+(c^48),c=getchar();
    return x;
}
//multiset<pair<int,int>>S;
multiset<task>S;
int main(){
    freopen("Decorations.in","r",stdin);
    freopen("Decorations.out","w",stdout);
    cin>>n;
    cout<<0;
    fclose(stdin);
    fclose(stdout); 
    return 0;
}
/*
9
A 235914 262875
A 666428 285768
A 665699 346436
A 703468 312977
A 546711 221060
D 66137
D 625212
D 339066
D 423757
*/