oj.uz

Submission #138543

# Submission time Handle Problem Language Result Execution time Memory
138543 2019-07-30T06:41:27 Z almogwald Ancient Books (IOI17_books) C++14
50 / 100
 240 ms 22784 KB 
#include <utility>
#include <algorithm>
#include <math.h>
#include <vector>
#include "books.h"
#define fori(i,n) for(int i=0;i<n;i++)
#define forib(i,n) for(int i=n-1;i>=0;i--)
#define maxl 10000000000
typedef long long lol;
using namespace std;
typedef vector<int> veci;

lol sum=0;
veci merge(veci a ,veci b){
	int i=0,j=0;
	veci ans;
	while(i<a.size()&&j<b.size()){
		if(a[i]<b[j]){
			ans.push_back(a[i++]);
			sum+=j;
		}else{
			ans.push_back(b[j++]);
		}
	}
	while(i<a.size()){
		ans.push_back(a[i++]);
		sum+=j;
	}
	while(j<b.size()){
		ans.push_back(b[j++]);
	}
	return ans;
}
veci mergesort(veci a){
	if(a.size()==1){
		return a;
	}
	veci b,c;
	fori(i,a.size()){
		if(i<a.size()/2){
			b.push_back(a[i]);
		}else{
			c.push_back(a[i]);
		}
	}
	b=mergesort(b);
	c=mergesort(c);
	return merge(b,c);
}
long long minimum_walk(vector<int> p, int s) {
	int n=p.size();
	vector<int> a(n,-1);
	int cur=s;
	do{
		sum+=abs(p[cur]-cur);
		cur= p[cur];
		a[cur]=0;
	}while(cur !=s);
	int num=1;
	vector<int> b(n+1,s);
	int mon=0;
	fori(i,n){
		if(p[i]==i||a[i]!=-1){
			continue;
		}
		int l=-10000000;
		int r=n;
		int cur=i;
		do{
			if(cur<s){
				l=max(l,cur);
			}else{
				r=min(r,cur);
			}
			sum+=abs(p[cur]-cur);
			cur= p[cur];
			a[cur]=num;
		}while(cur !=i);
		num++;
		b[r-1]=l;
	}
	bool ok=false;
	int minn=n;
	forib(i,n){
		if(i==s){
			break;
		}
		if(p[i]!=i){
			ok=true;
		}
		minn=min(minn,p[i]);
		if(ok&&minn==i){
			mon++;
		}
	}
	ok=false;
	minn=0;
	fori(i,n){
		if(i==s){
			break;
		}
		if(p[i]!=i){
			ok=true;
		}
		minn=max(minn,p[i]);
		if(ok&&minn==i){
			mon++;
		}
	}
	return sum+mon*2;
}

Compilation message

books.cpp: In function 'veci merge(veci, veci)':
books.cpp:17:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(i<a.size()&&j<b.size()){
        ~^~~~~~~~~
books.cpp:17:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(i<a.size()&&j<b.size()){
                    ~^~~~~~~~~
books.cpp:25:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(i<a.size()){
        ~^~~~~~~~~
books.cpp:29:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(j<b.size()){
        ~^~~~~~~~~
books.cpp: In function 'veci mergesort(veci)':
books.cpp:6:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define fori(i,n) for(int i=0;i<n;i++)
books.cpp:39:7:
  fori(i,a.size()){
       ~~~~~~~~~~                
books.cpp:39:2: note: in expansion of macro 'fori'
  fori(i,a.size()){
  ^~~~
books.cpp:40:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(i<a.size()/2){
      ~^~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 428 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 252 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 428 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 252 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 452 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 380 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 428 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 252 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 452 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 380 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 239 ms 22648 KB Output is correct
31 Correct 240 ms 22668 KB Output is correct
32 Correct 140 ms 22652 KB Output is correct
33 Correct 156 ms 22740 KB Output is correct
34 Correct 154 ms 22648 KB Output is correct
35 Correct 159 ms 22688 KB Output is correct
36 Correct 173 ms 22648 KB Output is correct
37 Correct 159 ms 22648 KB Output is correct
38 Correct 165 ms 22692 KB Output is correct
39 Correct 164 ms 22652 KB Output is correct
40 Correct 172 ms 22696 KB Output is correct
41 Correct 194 ms 22776 KB Output is correct
42 Correct 190 ms 22784 KB Output is correct
43 Correct 159 ms 22696 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 256 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 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 428 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 252 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 452 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 380 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 239 ms 22648 KB Output is correct
31 Correct 240 ms 22668 KB Output is correct
32 Correct 140 ms 22652 KB Output is correct
33 Correct 156 ms 22740 KB Output is correct
34 Correct 154 ms 22648 KB Output is correct
35 Correct 159 ms 22688 KB Output is correct
36 Correct 173 ms 22648 KB Output is correct
37 Correct 159 ms 22648 KB Output is correct
38 Correct 165 ms 22692 KB Output is correct
39 Correct 164 ms 22652 KB Output is correct
40 Correct 172 ms 22696 KB Output is correct
41 Correct 194 ms 22776 KB Output is correct
42 Correct 190 ms 22784 KB Output is correct
43 Correct 159 ms 22696 KB Output is correct
44 Incorrect 2 ms 256 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -