Submission #581930

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
581930	2022-06-23 08:14:44	AlexLuchianov	Sparklers (JOI17_sparklers)	C++14	100 / 100	198 ms	9452 KiB

sparklers

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
using ll = long long;
int const nmax = 200000;
int const inf = 1000000000;
int v[5 + nmax];
ll arr[2][5 + nmax];
ll prefmin[5 + nmax], suffmin[5 + nmax];
ll prefmax[5 + nmax], suffmax[5 + nmax];
bool solve(int n, int k, int t, int speed) {
  ll base = speed * t * 2LL;
  int ptr = 0, ptr2 = 0;
  arr[0][++ptr] = 0;
  arr[1][++ptr2] = 0;
  for(int i = k - 1; 1 <= i; i--) {
    arr[0][++ptr] = -(v[i + 1] - v[i]);
    arr[0][++ptr] = base;
  }
  
  for(int i = k + 1; i <= n; i++) {
    arr[1][++ptr2] = -(v[i] - v[i - 1]);
    arr[1][++ptr2] = base;
  }
  
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

sparklers.cpp: In function 'bool solve(int, int, int, int)':
sparklers.cpp:101:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  101 |   for(int i = 1; i < stLeft.size(); i++) {
      |                  ~~^~~~~~~~~~~~~~~
sparklers.cpp:109:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |   for(int i = 1; i < stRight.size(); i++) {
      |                  ~~^~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20
• Subtask 3: 50 / 50