Submission #427122

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
427122	2021-06-14T12:33:36 Z	Hazem	Ancient Books (IOI17_books)	C++14	12 / 100	103 ms	416 KB

books

#include "books.h"
#include <bits/stdc++.h>
#define LL long long 
 
using namespace std;
 
const LL LINF  = 1e18;
 
int a[10],n;
vector<int>vec;
 
bool check(){
 
	bool q = 1;
	for(int i=0;i<n;i++)
		q &= (a[i]==vec[i]);
	
	return q;
}
 
LL bt(int pos,int cur,int cnt);
 
LL move(int pos,int cur,int cnt){
 
	LL ret = LINF;
	if(pos<n-1)
		ret = min(ret,bt(pos+1,cur,cnt+1));
	
	if(pos>0)
		ret = min(ret,bt(pos-1,cur,cnt+1));
 
	return ret;
}
 
LL bt(int pos,int cur,int cnt){
 
	if(!pos&&check())
		return cnt;
	
	if(cnt>10)
		return LINF;
 
	LL ret = LINF;
	ret = min(ret,move(pos,cur,cnt));
	
	swap(cur,a[pos]);
	if(!pos&&check())
		return cnt;
		
	ret = min(ret,move(pos,cur,cnt));
	swap(cur,a[pos]);
 
	return ret;
}
 
long long minimum_walk(std::vector<int> P, int s) {	
	
	vec = P;
	n = P.size();
	for(int i=0;i<n;i++)
		a[i] = i;
 
	LL ans = bt(0,-1,0);
	return ans;
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	204 KB	Output is correct
2	Correct	4 ms	204 KB	Output is correct
3	Correct	4 ms	204 KB	Output is correct
4	Correct	2 ms	204 KB	Output is correct
5	Correct	4 ms	204 KB	Output is correct
6	Correct	4 ms	204 KB	Output is correct
7	Correct	4 ms	292 KB	Output is correct
8	Correct	4 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	4 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	4 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	5 ms	296 KB	Output is correct
16	Correct	4 ms	204 KB	Output is correct
17	Correct	5 ms	332 KB	Output is correct
18	Correct	4 ms	204 KB	Output is correct

Subtask #2

0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	204 KB	Output is correct
2	Correct	4 ms	204 KB	Output is correct
3	Correct	4 ms	204 KB	Output is correct
4	Correct	2 ms	204 KB	Output is correct
5	Correct	4 ms	204 KB	Output is correct
6	Correct	4 ms	204 KB	Output is correct
7	Correct	4 ms	292 KB	Output is correct
8	Correct	4 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	4 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	4 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	5 ms	296 KB	Output is correct
16	Correct	4 ms	204 KB	Output is correct
17	Correct	5 ms	332 KB	Output is correct
18	Correct	4 ms	204 KB	Output is correct
19	Runtime error	88 ms	324 KB	Execution killed with signal 11
20	Halted	0 ms	0 KB	-

Subtask #3

0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	204 KB	Output is correct
2	Correct	4 ms	204 KB	Output is correct
3	Correct	4 ms	204 KB	Output is correct
4	Correct	2 ms	204 KB	Output is correct
5	Correct	4 ms	204 KB	Output is correct
6	Correct	4 ms	204 KB	Output is correct
7	Correct	4 ms	292 KB	Output is correct
8	Correct	4 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	4 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	4 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	5 ms	296 KB	Output is correct
16	Correct	4 ms	204 KB	Output is correct
17	Correct	5 ms	332 KB	Output is correct
18	Correct	4 ms	204 KB	Output is correct
19	Runtime error	88 ms	324 KB	Execution killed with signal 11
20	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	103 ms	416 KB	Execution killed with signal 11
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	204 KB	Output is correct
2	Correct	4 ms	204 KB	Output is correct
3	Correct	4 ms	204 KB	Output is correct
4	Correct	2 ms	204 KB	Output is correct
5	Correct	4 ms	204 KB	Output is correct
6	Correct	4 ms	204 KB	Output is correct
7	Correct	4 ms	292 KB	Output is correct
8	Correct	4 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	4 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	204 KB	Output is correct
13	Correct	4 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	5 ms	296 KB	Output is correct
16	Correct	4 ms	204 KB	Output is correct
17	Correct	5 ms	332 KB	Output is correct
18	Correct	4 ms	204 KB	Output is correct
19	Runtime error	88 ms	324 KB	Execution killed with signal 11
20	Halted	0 ms	0 KB	-