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Submission #399734

# Submission time Handle Problem Language Result Execution time Memory
399734 2021-05-06T14:11:59 Z LucaDantas Ancient Books (IOI17_books) C++17
0 / 100
 1 ms 284 KB 
#include "books.h"

struct Par
{
	int l, r;
};

int abs(int x) { return x < 0 ? -x : x; }

std::vector<Par> segmentos;

long long minimum_walk(std::vector<int> p, int s) {
	int n = (int)p.size();
	long long ans = 0;
	bool ok = 1;
	for(int i = 0, ini = 0, fim = 0; i < n; i++) {
		if(p[i] == i) { ++ini; continue; }
		fim = std::max(fim, p[i]);
		ans += abs(p[i] - i);
		if(fim == i) {
			if(ok && ini >= s) segmentos.push_back({s, s}), ok = 0;
			segmentos.push_back({ini, fim}), ini = i+1;
			if(ini <= s && fim >= s) ok = 0;
		}
	}
	for(int i = 0; i < ((int)segmentos.size()) - 1; i++)
		ans += 2*(segmentos[i+1].l - segmentos[i].r);
	return ans;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 284 KB Output is correct
2 Incorrect 1 ms 284 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 284 KB Output is correct
2 Incorrect 1 ms 284 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 284 KB Output is correct
2 Incorrect 1 ms 284 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 284 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2974'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 284 KB Output is correct
2 Incorrect 1 ms 284 KB 3rd lines differ - on the 1st token, expected: '6', found: '8'
3 Halted 0 ms 0 KB -