#include "books.h"
#include "bits/stdc++.h"
#define MAXN 1000009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x) cerr<< #x <<" = "<< x<<endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N=1004;
int dp[N][N];
int L[MAXN],R[MAXN],bel[MAXN],S;
int destL,destR;
void extend(int &l,int &r){
int lp=l,rp=r;
if(bel[l])umin(lp,L[bel[l]]),umax(rp,R[bel[l]]);
if(bel[r])umin(lp,L[bel[r]]),umax(rp,R[bel[r]]);
while(l!=lp or r!=rp){
if(l>lp and bel[--l])umin(lp,L[bel[l]]),umax(rp,R[bel[l]]);
if(r<rp and bel[++r])umin(lp,L[bel[r]]),umax(rp,R[bel[r]]);
}
}
int rec(int l,int r){
if(l<destL or r>destR)return INF;
extend(l,r);
if(l==destL and r==destR)return 0;
int &ret=dp[l][r];
if(~ret)return ret;
return ret=min(rec(l-1,r),rec(l,r+1))+2;
}
long long minimum_walk(vector<int> p, int s) {
memset(dp,-1,sizeof dp);
int n=int(p.size());
vector<int>vis(n);
destL=destR=s;
ll res=0,e=0;int last=0;
for(int i=0;i<n;i++){
res+=abs(p[i]-i);
if(p[i]!=i and !vis[i]){
int to=i;L[++S]=i;
do{umax(R[S],to);bel[to]=S;vis[to]=1;to=p[to];}while(to!=i);
e+=max(0,i-destR)*2;
umin(destL,L[S]);umax(destR,R[S]);
}
}
if(n<N)return rec(s,s)+res;
return res+e;
}
Compilation message
books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:47:19: warning: unused variable 'last' [-Wunused-variable]
47 | ll res=0,e=0;int last=0;
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 22 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 24 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 26 |
Correct |
3 ms |
4460 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 28 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 29 |
Correct |
3 ms |
4332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 22 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 24 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 26 |
Correct |
3 ms |
4460 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 28 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 29 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 30 |
Correct |
298 ms |
19948 KB |
Output is correct |
| 31 |
Correct |
246 ms |
19908 KB |
Output is correct |
| 32 |
Correct |
135 ms |
16068 KB |
Output is correct |
| 33 |
Correct |
146 ms |
21484 KB |
Output is correct |
| 34 |
Correct |
145 ms |
21484 KB |
Output is correct |
| 35 |
Correct |
146 ms |
21760 KB |
Output is correct |
| 36 |
Correct |
151 ms |
21100 KB |
Output is correct |
| 37 |
Correct |
142 ms |
20204 KB |
Output is correct |
| 38 |
Correct |
150 ms |
19948 KB |
Output is correct |
| 39 |
Correct |
145 ms |
19948 KB |
Output is correct |
| 40 |
Correct |
148 ms |
19948 KB |
Output is correct |
| 41 |
Correct |
187 ms |
20076 KB |
Output is correct |
| 42 |
Correct |
182 ms |
19948 KB |
Output is correct |
| 43 |
Correct |
145 ms |
21868 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
4332 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 3 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 4 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 5 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4352 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 4 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 8 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 9 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 11 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 14 |
Correct |
3 ms |
4204 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 17 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 19 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 22 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 24 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 26 |
Correct |
3 ms |
4460 KB |
Output is correct |
| 27 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 28 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 29 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 30 |
Correct |
298 ms |
19948 KB |
Output is correct |
| 31 |
Correct |
246 ms |
19908 KB |
Output is correct |
| 32 |
Correct |
135 ms |
16068 KB |
Output is correct |
| 33 |
Correct |
146 ms |
21484 KB |
Output is correct |
| 34 |
Correct |
145 ms |
21484 KB |
Output is correct |
| 35 |
Correct |
146 ms |
21760 KB |
Output is correct |
| 36 |
Correct |
151 ms |
21100 KB |
Output is correct |
| 37 |
Correct |
142 ms |
20204 KB |
Output is correct |
| 38 |
Correct |
150 ms |
19948 KB |
Output is correct |
| 39 |
Correct |
145 ms |
19948 KB |
Output is correct |
| 40 |
Correct |
148 ms |
19948 KB |
Output is correct |
| 41 |
Correct |
187 ms |
20076 KB |
Output is correct |
| 42 |
Correct |
182 ms |
19948 KB |
Output is correct |
| 43 |
Correct |
145 ms |
21868 KB |
Output is correct |
| 44 |
Correct |
7 ms |
4332 KB |
Output is correct |
| 45 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 46 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 47 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 48 |
Correct |
6 ms |
4332 KB |
Output is correct |
| 49 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 50 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 51 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 52 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 53 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 54 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 55 |
Correct |
4 ms |
4332 KB |
Output is correct |
| 56 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 57 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 58 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 59 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 60 |
Correct |
3 ms |
4352 KB |
Output is correct |
| 61 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 62 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 63 |
Correct |
3 ms |
4332 KB |
Output is correct |
| 64 |
Incorrect |
140 ms |
20716 KB |
3rd lines differ - on the 1st token, expected: '9339550', found: '9338938' |
| 65 |
Halted |
0 ms |
0 KB |
- |
