Submission #807700

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
807700	2023-08-04 21:56:51	dong_liu	Cake 3 (JOI19_cake3)	C++17	100 / 100	700 ms	9536 KiB

cake3

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#include <bits/stdc++.h>
using namespace std;
#define N 200000
namespace kactl {
typedef long long ll;
#define sz(x) int(x.size())
/**
 * Author: Lukas Polacek
 * Date: 2009-10-30
 * License: CC0
 * Source: folklore/TopCoder
 * Description: Computes partial sums a[0] + a[1] + ... + a[pos - 1], and
 * updates single elements a[i], taking the difference between the old and new
 * value. Time: Both operations are $O(\log N)$. Status: Stress-tested
 */
struct FT {
  vector<ll> s;
  vector<int> k;
  void init(int n) {
    s.assign(n, 0);
    k.assign(n, 0);
  }
  void update(int pos, ll dif, int c) {  // a[pos] += dif
    for (; pos < sz(s); pos |= pos + 1) {
      s[pos] += dif;
 
 
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Compilation message (stderr)

cake3.cpp: In function 'int main()':
cake3.cpp:100:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |   scanf("%d%d", &n, &m_);
      |   ~~~~~^~~~~~~~~~~~~~~~~
cake3.cpp:102:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |     scanf("%d%d", &aa[i][1], &aa[i][0]);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 76 / 76