Submission #1052295

#	Time	Username	Problem	Language	Result	Execution time	Memory
1052295		0npata	Ancient Books (IOI17_books)	C++17	0 / 100	0 ms	348 KiB

books

#include "books.h"
#include<bits/stdc++.h>
using namespace std;

#define int long long
#define vec vector

long long minimum_walk(std::vector<int32_t> P, int32_t S) {
	int ans = 0;
	int N = P.size();
	for(int i = 0; i<N; i++) {
		ans += abs(P[i]-i);
	}
	int r = P[0];
	int lst = 0;
	for(int i = 0; i<N; i++) {
		if(P[i] != i) lst = i;
	}
	for(int i = 1; i<N; i++) {
		if(r < i) ans += 2;
		r = max((int) P[i], r);
	}

	return ans;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int32_t)':
books.cpp:15:6: warning: variable 'lst' set but not used [-Wunused-but-set-variable]
   15 |  int lst = 0;
      |      ^~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30