Submission #389735

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
389735	2021-04-14 12:24:08	cgiosy	Cake 3 (JOI19_cake3)	C++17	100 / 100	1029 ms	151236 KiB

cake3

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#include <bits/stdc++.h>
using namespace std;
using ll=long long;
struct cake {
  int v, x;
  bool operator<(cake b) const { return x<b.x; }
};
struct node {
  ll v; int c, l, r;
};
int main() {
  ios::sync_with_stdio(0);cin.tie(0);
  int N, M;
  cin>>N>>M;
  cake A[N];
  for(auto&[v,x]:A) cin>>v>>x;
  sort(A, A+N);
  node T[6200100]{};
  int t=N;
  for(int i=0; i<N; i++) {
    int x=A[i].v, p=i, q=i+1, s=1, e=1e9;
    while(s<e) {
      int m=s+e>>1;
      T[q].l=T[p].l, T[q].r=T[p].r;
      if(x<=m) T[q].v=T[p].v, T[q].c=T[p].c, e=m, p=T[p].l, q=T[q].l=++t;
      else T[q].v=T[p].v+x, T[q].c=T[p].c+1, s=m+1, p=T[p].r, q=T[q].r=++t;
    }
  }
 
 
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Compilation message (stderr)

cake3.cpp: In function 'int main()':
cake3.cpp:25:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |    int m=s+e>>1;
      |          ~^~
cake3.cpp: In lambda function:
cake3.cpp:36:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |    int m=s+e>>1, c=T[r].c-T[l].c;
      |          ~^~
cake3.cpp: In lambda function:
cake3.cpp:49:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |   int m=l+r>>1, n=e;
      |         ~^~

• Subtask 1: 5 / 5
• Subtask 2: 19 / 19
• Subtask 3: 76 / 76