oj.uz

Submission #915920

# Submission time Handle Problem Language Result Execution time Memory
915920 2024-01-24T22:12:44 Z nightfal Ancient Books (IOI17_books) C++14
50 / 100
 82 ms 12152 KB 
#include <cstdio>
#include <vector>
#include <cassert>
#include <cstdlib>
#include <tuple>
#include <climits>

using namespace std;

bool isSubtask3(int s) {return s==0;}
bool isSubtask4(int n) {return n<=1000;}

long long subtask3(vector<int> p, int s = 0, int e = -1 , int dir = 1) {
    int n = p.size(), last = s;
    if (e==-1) e = n-1;
    long long total = 0;

    for(int i=s; dir==1 && i<=e || dir==-1 && i>=e; i += dir) {
        if (i==p[i]) continue;
        if (dir*(i-last) > 0) total += abs(i-last)*2;
        total += abs(p[i]-i);
        last = dir==1? max(last,p[i]):min(last,p[i]);
    }
	return total;
}

long long cal(vector<int> p, int l, int r, int lmost, int rmost, vector<vector<long long>>& dp) {
    if (dp[l][r]!=LLONG_MAX) return dp[l][r];
    int n = p.size(); 
    long long temp1=LLONG_MAX, temp2=LLONG_MAX;
    if (l>0) {
        temp1 = abs(p[l-1]-(l-1)); if(l-1 < lmost) temp1 += 2;
        int lmostN = min(lmost,min(l-1,p[l-1])), rmostN = max(rmost,p[l-1]);
        temp1 += cal(p,l-1,r,lmostN,rmostN,dp); 
    }
    if (r<n-1) {
        temp2 = abs(p[r+1]-(r+1)); if(r+1 > rmost) temp2 += 2;
        int lmostN = min(lmost,p[r+1]), rmostN = max(rmost,max(r+1,p[r+1]));
        temp2 += cal(p,l,r+1,lmostN,rmostN,dp); 
    }
    dp[l][r] = min(temp1,temp2);
    return dp[l][r];
}

long long subtask4(vector<int> p, int s) {
    int n = p.size();
    long long move = 0;
    
    int start; for(start = 0; start < s; start++) if(start!=p[start]) break;
    int end; for(end = n-1; end > s; end--) if(end!=p[end]) break;
    for(int i = 0; i <= end-start; i++) p[i] = p[i+start]-start;
    s -= start; n = end-start+1; p.resize(n); 
    vector<vector<long long>> dp(n,vector<long long>(n,LLONG_MAX));
    dp[0][n-1]=0;

    int l=s, r=s, lmost = min(s,p[s]), rmost = max(s,p[s]);
    return cal(p,l,r,lmost,rmost,dp)+abs(p[s]-s);
}

tuple<int,int,long long> extend(vector<int> p, int l, int r, int lmost, int rmost, int move) {
    int n = p.size();
    while(l> lmost || r < rmost) {
        int idx;
        if (l > max(lmost,0)) idx == --l;
        else if (r < min(rmost,n-1)) idx == ++r;
        move += abs(p[idx]-idx);
        lmost = min(lmost,p[idx]); 
        rmost = max(rmost,p[idx]);
    }
    return make_tuple(l,r,move);
} 

long long fulltask(vector<int> p, int s) {

    int n = p.size(), left = s-1, right = s, leftmost = s-1, rightmost = s;
    long long total=0, sumL=0, sumR=0, moveL=1, moveR=0;

    while(0<=left || right<=n-1) {
        printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
        printf("left=%d, right=%d, leftmost=%d, rightmost=%d\n\n",left,right,leftmost,rightmost);

        if(right <= n-1 && (left < 0 || moveR < moveL || moveR == moveL && right <= rightmost)) {
            if(rightmost < right) moveR++;
            sumR += abs(p[right]-right);
            rightmost = max(rightmost,right);
            rightmost = max(rightmost,p[right]);    
            leftmost  = min(leftmost, p[right]);
            if (leftmost <= left) {moveL = 0; total+=sumR+moveR*2; moveR=0; sumR=0;}
            right++;
        } 
        else if(0 <= left && (right > n-1 || moveR > moveL || moveR == moveL && right > rightmost)) {
            if (left < leftmost) moveL++;
            sumL += abs(p[left]-left); 
            leftmost  = min(leftmost,left);
            leftmost  = min(leftmost, p[left]);
            rightmost = min(rightmost,p[left]);
            if (right <= rightmost) {moveR = 0; total+=sumL+moveL*2; moveL=0; sumL=0;}            
            left--;
        }
    }
    printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
    printf("left=%d, right=%d, leftmost=%d, rightmost=%d\n",left,right,leftmost,rightmost);
 
    if(sumL) total += sumL + moveL; // ??
    if(sumR) total += sumR + moveR; // ??
    return total;
}

long long minimum_walk(std::vector<int> p, int s) {
    if (isSubtask3(s)) return subtask3(p);
    // return subtask4(p,s);
    return fulltask(p,s);
}

Compilation message

books.cpp: In function 'long long int subtask3(std::vector<int>, int, int, int)':
books.cpp:18:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   18 |     for(int i=s; dir==1 && i<=e || dir==-1 && i>=e; i += dir) {
      |                  ~~~~~~~^~~~~~~
books.cpp: In function 'long long int subtask4(std::vector<int>, int)':
books.cpp:47:15: warning: unused variable 'move' [-Wunused-variable]
   47 |     long long move = 0;
      |               ^~~~
books.cpp: In function 'std::tuple<int, int, long long int> extend(std::vector<int>, int, int, int, int, int)':
books.cpp:64:35: warning: value computed is not used [-Wunused-value]
   64 |         if (l > max(lmost,0)) idx == --l;
      |                               ~~~~^~~~~~
books.cpp:65:42: warning: value computed is not used [-Wunused-value]
   65 |         else if (r < min(rmost,n-1)) idx == ++r;
      |                                      ~~~~^~~~~~
books.cpp: In function 'long long int fulltask(std::vector<int>, int)':
books.cpp:79:24: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   79 |         printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                       ~^                                          ~~~~~
      |                        |                                          |
      |                        int                                        long long int
      |                       %lld
books.cpp:79:33: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=]
   79 |         printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                ~^                                       ~~~~
      |                                 |                                       |
      |                                 int                                     long long int
      |                                %lld
books.cpp:79:42: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long long int' [-Wformat=]
   79 |         printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                         ~^                                   ~~~~
      |                                          |                                   |
      |                                          int                                 long long int
      |                                         %lld
books.cpp:79:52: warning: format '%d' expects argument of type 'int', but argument 5 has type 'long long int' [-Wformat=]
   79 |         printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                                   ~^                              ~~~~~
      |                                                    |                              |
      |                                                    int                            long long int
      |                                                   %lld
books.cpp:79:62: warning: format '%d' expects argument of type 'int', but argument 6 has type 'long long int' [-Wformat=]
   79 |         printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                                             ~^                          ~~~~~
      |                                                              |                          |
      |                                                              int                        long long int
      |                                                             %lld
books.cpp:82:73: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   82 |         if(right <= n-1 && (left < 0 || moveR < moveL || moveR == moveL && right <= rightmost)) {
      |                                                          ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
books.cpp:91:78: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   91 |         else if(0 <= left && (right > n-1 || moveR > moveL || moveR == moveL && right > rightmost)) {
      |                                                               ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
books.cpp:101:20: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  101 |     printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                   ~^                                          ~~~~~
      |                    |                                          |
      |                    int                                        long long int
      |                   %lld
books.cpp:101:29: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=]
  101 |     printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                            ~^                                       ~~~~
      |                             |                                       |
      |                             int                                     long long int
      |                            %lld
books.cpp:101:38: warning: format '%d' expects argument of type 'int', but argument 4 has type 'long long int' [-Wformat=]
  101 |     printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                     ~^                                   ~~~~
      |                                      |                                   |
      |                                      int                                 long long int
      |                                     %lld
books.cpp:101:48: warning: format '%d' expects argument of type 'int', but argument 5 has type 'long long int' [-Wformat=]
  101 |     printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                               ~^                              ~~~~~
      |                                                |                              |
      |                                                int                            long long int
      |                                               %lld
books.cpp:101:58: warning: format '%d' expects argument of type 'int', but argument 6 has type 'long long int' [-Wformat=]
  101 |     printf("total=%d, sumL=%d, sumR=%d, moveL=%d, moveR=%d\n",total,sumL,sumR,moveL,moveR);
      |                                                         ~^                          ~~~~~
      |                                                          |                          |
      |                                                          int                        long long int
      |                                                         %lld
books.cpp: In function 'std::tuple<int, int, long long int> extend(std::vector<int>, int, int, int, int, int)':
books.cpp:66:26: warning: 'idx' is used uninitialized in this function [-Wuninitialized]
   66 |         move += abs(p[idx]-idx);
      |                          ^

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 348 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 79 ms 12004 KB Output is correct
31 Correct 82 ms 12116 KB Output is correct
32 Correct 73 ms 12004 KB Output is correct
33 Correct 77 ms 11996 KB Output is correct
34 Correct 77 ms 12016 KB Output is correct
35 Correct 76 ms 12120 KB Output is correct
36 Correct 78 ms 11960 KB Output is correct
37 Correct 79 ms 12116 KB Output is correct
38 Correct 82 ms 12008 KB Output is correct
39 Correct 73 ms 12152 KB Output is correct
40 Correct 74 ms 12020 KB Output is correct
41 Correct 75 ms 12000 KB Output is correct
42 Correct 79 ms 12020 KB Output is correct
43 Correct 80 ms 12116 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB secret mismatch
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 79 ms 12004 KB Output is correct
31 Correct 82 ms 12116 KB Output is correct
32 Correct 73 ms 12004 KB Output is correct
33 Correct 77 ms 11996 KB Output is correct
34 Correct 77 ms 12016 KB Output is correct
35 Correct 76 ms 12120 KB Output is correct
36 Correct 78 ms 11960 KB Output is correct
37 Correct 79 ms 12116 KB Output is correct
38 Correct 82 ms 12008 KB Output is correct
39 Correct 73 ms 12152 KB Output is correct
40 Correct 74 ms 12020 KB Output is correct
41 Correct 75 ms 12000 KB Output is correct
42 Correct 79 ms 12020 KB Output is correct
43 Correct 80 ms 12116 KB Output is correct
44 Incorrect 1 ms 348 KB secret mismatch
45 Halted 0 ms 0 KB -