Submission #843338

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
843338	2023-09-03 23:13:37	pera	Colouring a rectangle (eJOI19_colouring)	C++17	100 / 100	407 ms	74780 KiB

colouring

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 <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 4e5;
vector<int> t(4 * N) , lz(4 * N);
void push(int u){
  t[u * 2] += lz[u];
  t[u * 2 + 1] += lz[u];
  lz[u * 2] += lz[u];
  lz[u * 2 + 1] += lz[u];
  lz[u] = 0;
}
void make_new(int n){
  for(int i = 0;i <= 4 * n;i ++){
    t[i] = lz[i] = 0;
  }
}
void pos_assign(int u , int l , int r , int pos , int val){
  if(l == r){
    t[u] = val;
    return;
  }
  push(u);
  int m = (l + r) / 2;
  if(pos <= m) pos_assign(u * 2 , l , m , pos , val);
  else pos_assign(u * 2 + 1 , m + 1 , r , pos , val);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

colouring.cpp:70:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   70 | main(){
      | ^~~~
colouring.cpp: In function 'int main()':
colouring.cpp:102:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |    for(int k = 0;k < cost[par][i].size();k ++){
      |                  ~~^~~~~~~~~~~~~~~~~~~~~
colouring.cpp:95:7: warning: 'parity' may be used uninitialized in this function [-Wmaybe-uninitialized]
   95 |   int par = (parity ^ (w == 1)) , all_cost = 0 , N = (int)f[w].size();/*
      |       ^~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20