Submission #304386

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
304386	2020-09-21 08:40:33	myungwoo	Comparing Plants (IOI20_plants)	C++17	100 / 100	1363 ms	43500 KiB

plants

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#include <bits/stdc++.h>
#include "plants.h"
using namespace std;
#define MAXN 200005
#define debug(...) fprintf(stderr, __VA_ARGS__); fflush(stderr);
typedef pair<int, int> pii;
int N, K, R[MAXN];
int H[MAXN], nxt_r[MAXN][18], nxt_l[MAXN][18];
template <typename T>
struct SegTree{
  int n_bits, TS, ST;
  int range_l(int x){ return ((x<<(__builtin_clz(x)-31+n_bits)) ^ (1<<n_bits)) + 1; }
  int range_r(int x){ return ((x<<(__builtin_clz(x)-31+n_bits) ^ ((1<<(__builtin_clz(x)-31+n_bits))-1)) ^ (1<<n_bits)) + 1; }
  struct Value{
    T value, lazysum;
  };
  vector<Value> tree;
  SegTree(int arr[]){
    n_bits = 32-__builtin_clz(N-1);
    TS = 1 << n_bits+1; ST = TS/2-1;
    tree.resize(TS, {0, 0});
    for (int i=ST+1;i<TS;i++) tree[i].value = i-ST <= N ? arr[i-ST] : 1e9;
    for (int i=ST;i;i--) tree[i].value = min(tree[i*2].value, tree[i*2+1].value);
  }
  void propagate(int n){
    if (n <= ST){
      tree[n*2].value += tree[n].lazysum, tree[n*2+1].value += tree[n].lazysum;
 
 
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Compilation message (stderr)

plants.cpp: In instantiation of 'SegTree<T>::SegTree(int*) [with T = int]':
plants.cpp:101:25:   required from here
plants.cpp:23:19: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   23 |   TS = 1 << n_bits+1; ST = TS/2-1;
      |             ~~~~~~^~

• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 11 / 11
• Subtask 6: 15 / 15
• Subtask 7: 25 / 25