Submission #304042

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
304042	2020-09-21 01:37:02	myungwoo	Comparing Plants (IOI20_plants)	C++17	44 / 100	891 ms	20076 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);
int N, K, R[MAXN];
int A[MAXN], B[MAXN];
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;
      tree[n*2].lazysum += tree[n].lazysum, tree[n*2+1].lazysum += tree[n].lazysum;
 
 
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Compilation message (stderr)

plants.cpp: In instantiation of 'SegTree<T>::SegTree(int*) [with T = int]':
plants.cpp:89:24:   required from here
plants.cpp:22:19: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   22 |   TS = 1 << n_bits+1; ST = TS/2-1;
      |             ~~~~~~^~

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