Submission #384800

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
384800	2021-04-02T09:47:21 Z	kshitij_sodani	Ancient Books (IOI17_books)	C++14	50 / 100	527 ms	120404 KB

books

//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
#define endl '\n'


#include "books.h"
llo ans=0;
llo n;
vector<llo> adj[1000001];
llo vis[1000001];
vector<llo> ss;
void dfs(int no){
	vis[no]=1;
	ss.pb(no);
	for(auto j:adj[no]){
		if(vis[j]==0){
			dfs(j);
		}
	}
}
long long minimum_walk(std::vector<int> p, int s) {
	while(p.size()){
		if(p.back()+1==p.size()){
			p.pop_back();
		}
		else{
			break;
		}
	}


	n=p.size();
//cout<<p.size()<<":"<<endl;
	if(n==0){
		return 0;
	}
	for(int i=0;i<n;i++){
		adj[i].pb(p[i]);
	}
	//llo co=0;
	llo ans=0;
	vector<pair<llo,llo>> tt;
	for(int i=0;i<n;i++){
		if(vis[i]==0){
			ss.clear();
			dfs(i);
			/*if(ss.size()==0){
				continue;
			}*/
			llo mi=ss[0];
			llo ma=ss[0];
			for(auto j:ss){
				mi=min(mi,j);
				ma=max(ma,j);
			}
			tt.pb({mi,ma});
			//co++;
			
			for(int j=0;j+1<ss.size();j++){
				ans+=abs(ss[j]-ss[j+1]);
			}
		/*	for(auto j:ss){
				cout<<j<<",,";
			}
			cout<<endl;*/
			ans+=(abs(ss[0]-ss.back()));
		}
	}
	sort(tt.begin(),tt.end());
	vector<pair<llo,llo>> tt2;
	for(auto j:tt){
		if(tt2.size()==0){
			tt2.pb(j);
		}
		else{
			if(tt2.back().b<j.a){
				tt2.pb(j);
			}
			else{
				tt2[tt2.size()-1].b=max(tt2[tt2.size()-1].b,j.b);
			}
		}
	}
	llo xx=tt2.size();
	ans+=2*(xx-1);


	//ans+=2*(co-1);

	return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:29:16: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   if(p.back()+1==p.size()){
      |      ~~~~~~~~~~^~~~~~~~~~
books.cpp:65:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |    for(int j=0;j+1<ss.size();j++){
      |                ~~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	17 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23788 KB	Output is correct
8	Correct	17 ms	23788 KB	Output is correct
9	Correct	17 ms	23788 KB	Output is correct
10	Correct	17 ms	23788 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23796 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	18 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	17 ms	23788 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	17 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23788 KB	Output is correct
8	Correct	17 ms	23788 KB	Output is correct
9	Correct	17 ms	23788 KB	Output is correct
10	Correct	17 ms	23788 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23796 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	18 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	17 ms	23788 KB	Output is correct
19	Correct	17 ms	23860 KB	Output is correct
20	Correct	18 ms	23916 KB	Output is correct
21	Correct	17 ms	23788 KB	Output is correct
22	Correct	17 ms	23916 KB	Output is correct
23	Correct	18 ms	23916 KB	Output is correct
24	Correct	17 ms	23916 KB	Output is correct
25	Correct	17 ms	23916 KB	Output is correct
26	Correct	17 ms	23916 KB	Output is correct
27	Correct	17 ms	23916 KB	Output is correct
28	Correct	17 ms	23916 KB	Output is correct
29	Correct	17 ms	24052 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	17 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23788 KB	Output is correct
8	Correct	17 ms	23788 KB	Output is correct
9	Correct	17 ms	23788 KB	Output is correct
10	Correct	17 ms	23788 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23796 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	18 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	17 ms	23788 KB	Output is correct
19	Correct	17 ms	23860 KB	Output is correct
20	Correct	18 ms	23916 KB	Output is correct
21	Correct	17 ms	23788 KB	Output is correct
22	Correct	17 ms	23916 KB	Output is correct
23	Correct	18 ms	23916 KB	Output is correct
24	Correct	17 ms	23916 KB	Output is correct
25	Correct	17 ms	23916 KB	Output is correct
26	Correct	17 ms	23916 KB	Output is correct
27	Correct	17 ms	23916 KB	Output is correct
28	Correct	17 ms	23916 KB	Output is correct
29	Correct	17 ms	24052 KB	Output is correct
30	Correct	527 ms	120404 KB	Output is correct
31	Correct	489 ms	99048 KB	Output is correct
32	Correct	146 ms	38508 KB	Output is correct
33	Correct	299 ms	112952 KB	Output is correct
34	Correct	271 ms	113048 KB	Output is correct
35	Correct	263 ms	101448 KB	Output is correct
36	Correct	243 ms	87644 KB	Output is correct
37	Correct	260 ms	78576 KB	Output is correct
38	Correct	270 ms	78188 KB	Output is correct
39	Correct	276 ms	78188 KB	Output is correct
40	Correct	281 ms	79720 KB	Output is correct
41	Correct	429 ms	96112 KB	Output is correct
42	Correct	397 ms	86240 KB	Output is correct
43	Correct	270 ms	92892 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	17 ms	23916 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	17 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23788 KB	Output is correct
8	Correct	17 ms	23788 KB	Output is correct
9	Correct	17 ms	23788 KB	Output is correct
10	Correct	17 ms	23788 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23796 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	18 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	17 ms	23788 KB	Output is correct
19	Correct	17 ms	23860 KB	Output is correct
20	Correct	18 ms	23916 KB	Output is correct
21	Correct	17 ms	23788 KB	Output is correct
22	Correct	17 ms	23916 KB	Output is correct
23	Correct	18 ms	23916 KB	Output is correct
24	Correct	17 ms	23916 KB	Output is correct
25	Correct	17 ms	23916 KB	Output is correct
26	Correct	17 ms	23916 KB	Output is correct
27	Correct	17 ms	23916 KB	Output is correct
28	Correct	17 ms	23916 KB	Output is correct
29	Correct	17 ms	24052 KB	Output is correct
30	Correct	527 ms	120404 KB	Output is correct
31	Correct	489 ms	99048 KB	Output is correct
32	Correct	146 ms	38508 KB	Output is correct
33	Correct	299 ms	112952 KB	Output is correct
34	Correct	271 ms	113048 KB	Output is correct
35	Correct	263 ms	101448 KB	Output is correct
36	Correct	243 ms	87644 KB	Output is correct
37	Correct	260 ms	78576 KB	Output is correct
38	Correct	270 ms	78188 KB	Output is correct
39	Correct	276 ms	78188 KB	Output is correct
40	Correct	281 ms	79720 KB	Output is correct
41	Correct	429 ms	96112 KB	Output is correct
42	Correct	397 ms	86240 KB	Output is correct
43	Correct	270 ms	92892 KB	Output is correct
44	Incorrect	17 ms	23916 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-

Submission #384800

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 0 / 20.0

Subtask #5 0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
0 / 20.0

Subtask #5
0 / 30.0