Submission #288550

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
288550	2020-09-01 15:55:08	user202729	Ancient Books (IOI17_books)	C++17	100 / 100	732 ms	90560 KiB

books

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// moreflags=grader.cpp
// 11
// late
// ...
//
#include "books.h"
#include<algorithm>
#include<numeric>
#if not LOCAL
#define NDEBUG
#endif
#include<cassert>
#include<climits>
long long minimum_walk(std::vector<int> p, int s) {
  assert(s>=0); assert(s<(int)p.size());
  int64_t result{};
  for(int index=0; index<(int)p.size(); ++index){
    if(index<p[index]){
      result+=p[index]-index;
    }
  }
  struct Dsu{
    std::vector<int> data;
    void reset(int number){data.assign(number, -1);}
    int root(int node){return data[node]>=0 ? data[node]=root(data[node]): node;}
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 20 / 20
• Subtask 5: 30 / 30