제출 #222283

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
222283	2020-04-13 01:43:48	MODDI	벽 (IOI14_wall)	C++14	100 / 100	1062 ms	69648 KiB

wall

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#include "wall.h"
#include <cstdio>
#include <algorithm>
 
using namespace std;
 
const int OFF = (1 << 21);
const int INF = 0x3f3f3f3f;
 
int mx[2 * OFF ], mi[2 * OFF];
 
void spoji(int j,int i){
  int olmi = mi[i];
  mx[i] = min(mx[i], mx[j]);
  mi[i] = max(mi[i], mi[j]);
  if(mi[i] > mx[i]){
    if(olmi < mi[j])
      mx[i] = mi[i];
    else
      mi[i] = mx[i];
  }
}
void prop(int i){
  if(i < OFF){
    spoji(i, 2 * i);
    spoji(i, 2 * i + 1);
    mx[i] = INF, mi[i] = 0;
  }
}
 
 
 
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