Submission #154690

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
154690	2019-09-23 13:54:10	junodeveloper	허수아비 (JOI14_scarecrows)	C++14	100 / 100	691 ms	69240 KiB

scarecrows

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#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
int n;
pii p[200010];
vector<pii> tree[4*200010];
void update(int h,int tl,int tr,int x,int y) {
  if(tr<y||y<tl)return;
  while(!tree[h].empty()&&tree[h].back().se<y)
    tree[h].pop_back();
  tree[h].push_back({x,y});
  if(tl==tr)return;
  int mid=(tl+tr)/2;
  update(h*2,tl,mid,x,y);
  update(h*2+1,mid+1,tr,x,y);
}
pii query(int h,int tl,int tr,int l,int r,pii c) {
  if(r<tl||tr<l) return c;
  if(l<=tl&&tr<=r) {
    if(tree[h].empty()) return c;
    int i=lower_bound(all(tree[h]),make_pair(c.fi+1,-1))-tree[h].begin();
    return {max(tree[h].back().fi,c.fi), c.se+sz(tree[h])-i};
  }
 
 
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Compilation message (stderr)

scarecrows.cpp: In function 'int main()':
scarecrows.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
scarecrows.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&p[i].fi,&p[i].se);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 85 / 85