#include <bits/stdc++.h>
using namespace std ;
#define ff first
#define ss second
#define ll long long
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define ones(x) __builtin_popcount(x)
#define remove(v) v.erase(unique(all(v)), v.end())
#define rep(i, a, b) for(int i = a; i <= b; i++)
#define per(i, a, b) for(int i = a; i >= b; i--)
#ifdef local
#include "C:\debug.h"
#else
#define dbg(x...) 42
#endif
#define int ll
const int N = 1e5 + 2 ;
int n , q , d[N] , c[N] , up[N][19] , dp[N][19] , used[N] ;
vector<int> g[N] ;
void dfs(int v , int p) {
used[v] = 1 ;
up[v][0] = p ;
rep(i , 1 , 17) {
up[v][i] = up[up[v][i - 1]][i - 1] ;
}
for(auto& to : g[v]) {
if(to != p) {
dfs(to , v) ;
}
}
}
void solve(){
cin >> n >> q ;
rep(i , 1 , n) {
cin >> d[i] >> c[i] ;
}
stack<pair<int,int>> s ;
per(i , n , 1){
while(sz(s) && s.top().first <= d[i]) s.pop() ;
if(sz(s)) g[s.top().second].pb(i) ;
s.push({d[i] , i}) ;
}
per(i , n , 1) {
if(!used[i]) {
int pr = i ;
dfs(i , pr) ;
}
}
}
signed main () {
ios::sync_with_stdio(false) ;
cin.tie(0) ;
int test = 1 ;
// cin >> test ;
for(int i = 1 ; i <= test ; i++) {
solve() ;
}
}
