Language: Java

import java.io.InputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.InputMismatchException;
import java.util.NoSuchElementException;
import java.math.BigInteger;
 
public class Main{
 
static PrintWriter out;
static InputReader ir;
 
static void solve(){
 int n=ir.nextInt();
 SegmentTreeRMQ tree=new SegmentTreeRMQ(n);
 int q=ir.nextInt();
 while(q-->0){
  int com=ir.nextInt();
  int x=ir.nextInt();
  int y=ir.nextInt();
  if(com==0){
   tree.update(x,y);
  }
  else{
   out.println(tree.query(x,y+1));
  }
 }
}

static class SegmentTreeRMQ{

 private int n;
 private long[] seg;
 
 public SegmentTreeRMQ(int nn) {
  n=1;
  while (n<nn) n<<=1;
  seg=new long[n*2-1];
  Arrays.fill(seg,Integer.MAX_VALUE);
 }

 public static long query(int a,int b){return _query(a,b,0,0,n);}

 private static long _query(int a,int b,int k,int l,int r) {
  if (a <= l && r <= b) return seg[k];
  if (r <= a || b <= l) return Long.MAX_VALUE;
  long cl=_query(a, b, k*2+1,l,(l+r)/2);
  long cr =_query(a, b, k*2+ 2,(l+r)/2,r);
  return Math.min(cl,cr);
 }
 
 public static void update(int i,long val) {
  i+=n-1;
  seg[i]=val;
  while(i>0) {
   i=(i-1)/2;
   seg[i]=Math.min(seg[i*2+1],seg[i*2+2]);
  }
 }
}
 
public static void main(String[] args) throws Exception{
 ir=new InputReader(System.in);
 out=new PrintWriter(System.out);
 new Main().solve();
 out.flush();
}
 
static class InputReader {
 private InputStream in;
 private byte[] buffer=new byte[1024];
 private int curbuf;
 private int lenbuf;
 
 public InputReader(InputStream in) {this.in=in; this.curbuf=this.lenbuf=0;}
  
 public boolean hasNextByte() {
  if(curbuf>=lenbuf){
   curbuf= 0;
   try{
    lenbuf=in.read(buffer);
   }catch(IOException e) {
    throw new InputMismatchException();
   }
   if(lenbuf<=0) return false;
  }
  return true;
 }
 
 private int readByte(){if(hasNextByte()) return buffer[curbuf++]; else return -1;}
  
 private boolean isSpaceChar(int c){return !(c>=33&&c<=126);}
  
 private void skip(){while(hasNextByte()&&isSpaceChar(buffer[curbuf])) curbuf++;}
  
 public boolean hasNext(){skip(); return hasNextByte();}
  
 public String next(){
  if(!hasNext()) throw new NoSuchElementException();
  StringBuilder sb=new StringBuilder();
  int b=readByte();
  while(!isSpaceChar(b)){
   sb.appendCodePoint(b);
   b=readByte();
  }
  return sb.toString();
 }
  
 public int nextInt() {
  if(!hasNext()) throw new NoSuchElementException();
  int c=readByte();
  while (isSpaceChar(c)) c=readByte();
  boolean minus=false;
  if (c=='-') {
   minus=true;
   c=readByte();
  }
  int res=0;
  do{
   if(c<'0'||c>'9') throw new InputMismatchException();
   res=res*10+c-'0';
   c=readByte();
  }while(!isSpaceChar(c));
  return (minus)?-res:res;
 }
  
 public long nextLong() {
  if(!hasNext()) throw new NoSuchElementException();
  int c=readByte();
  while (isSpaceChar(c)) c=readByte();
  boolean minus=false;
  if (c=='-') {
   minus=true;
   c=readByte();
  }
  long res = 0;
  do{
   if(c<'0'||c>'9') throw new InputMismatchException();
   res=res*10+c-'0';
   c=readByte();
  }while(!isSpaceChar(c));
  return (minus)?-res:res;
 }
 
 public double nextDouble(){return Double.parseDouble(next());}
 
 public BigInteger nextBigInteger(){return new BigInteger(next());}
 
 public int[] nextIntArray(int n){
  int[] a=new int[n];
  for(int i=0;i<n;i++) a[i]=nextInt();
  return a;
 }
 
 public long[] nextLongArray(int n){
  long[] a=new long[n];
  for(int i=0;i<n;i++) a[i]=nextLong();
  return a;
 }
 
 public char[][] nextCharMap(int n,int m){
  char[][] map=new char[n][m];
  for(int i=0;i<n;i++) map[i]=next().toCharArray();
  return map;
 }
}
}

Compiler output:
Main.java:45: error: non-static variable n cannot be referenced from a static context
 public static long query(int a,int b){return _query(a,b,0,0,n);}
                                                             ^
Main.java:48: error: non-static variable seg cannot be referenced from a static context
  if (a <= l && r <= b) return seg[k];
                               ^
Main.java:56: error: non-static variable n cannot be referenced from a static context
  i+=n-1;
     ^
Main.java:57: error: non-static variable seg cannot be referenced from a static context
  seg[i]=val;
  ^
Main.java:60: error: non-static variable seg cannot be referenced from a static context
   seg[i]=Math.min(seg[i*2+1],seg[i*2+2]);
   ^
Main.java:60: error: non-static variable seg cannot be referenced from a static context
   seg[i]=Math.min(seg[i*2+1],seg[i*2+2]);
                   ^
Main.java:60: error: non-static variable seg cannot be referenced from a static context
   seg[i]=Math.min(seg[i*2+1],seg[i*2+2]);
                              ^
7 errors