제출 #599703

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
599703	2022-07-19 19:15:07	MilosMilutinovic	가로등 (APIO19_street_lamps)	C++14	100 / 100	2335 ms	430548 KiB

street_lamps

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/**
 *    author:  wxhtzdy
 *    created: 19.07.2022 20:06:36
**/
#include <bits/stdc++.h>
using namespace std;
const int N = (int) 3e5 + 5;
const int M = 120 * N; 
int root[N], ls[M], rs[M], tsz;
long long st[M];
void modify(int& c, int l, int r, int ll, int rr, int v) {
  if (!c) {
    c = ++tsz;
  }
  if (l > r || ll > rr || l > rr || r < ll) {
    return;
  }
  if (ll <= l && r <= rr) {
    st[c] += v;
    return;
  }
  int mid = l + r >> 1;
  modify(ls[c], l, mid, ll, rr, v);
  modify(rs[c], mid + 1, r, ll, rr, v);      
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

street_lamps.cpp: In function 'void modify(int&, int, int, int, int, int)':
street_lamps.cpp:26:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   26 |   int mid = l + r >> 1;
      |             ~~^~~
street_lamps.cpp: In function 'long long int get(int, int, int, int)':
street_lamps.cpp:49:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |   int mid = l + r >> 1;
      |             ~~^~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20