제출 #425017

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
425017	2021-06-12 12:28:16	MilosMilutinovic	XORanges (eJOI19_xoranges)	C++14	100 / 100	209 ms	11224 KiB

xoranges

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#include <bits/stdc++.h>
using namespace std;
const int N = 3e5 + 5;
const int M = 4 * N;
int a[N], st[M][2];
void build(int node, int l, int r) {
  if (l > r) return;
  if (l == r) {
    st[node][l % 2] = a[l];
    return;
  }
  int mid = l + r >> 1;
  build(node * 2, l, mid);
  build(node * 2 + 1, mid + 1, r);
  st[node][0] = st[node * 2][0] ^ st[node * 2 + 1][0];
  st[node][1] = st[node * 2][1] ^ st[node * 2 + 1][1];
}
void update(int node, int l, int r, int pos) {
  if (l > r) {
    return;
  }
  if (l == r) {
    st[node][l % 2] = a[l];
    return;
  }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

xoranges.cpp: In function 'void build(int, int, int)':
xoranges.cpp:16:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   16 |   int mid = l + r >> 1;
      |             ~~^~~
xoranges.cpp: In function 'void update(int, int, int, int)':
xoranges.cpp:31:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   31 |   int mid = l + r >> 1;
      |             ~~^~~
xoranges.cpp: In function 'int get(int, int, int, int, int, int)':
xoranges.cpp:41:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |   int mid = l + r >> 1;
      |             ~~^~~

• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 25 / 25
• Subtask 4: 20 / 20
• Subtask 5: 25 / 25