oj.uz

Submission #228043

# Submission time Handle Problem Language Result Execution time Memory
228043 2020-04-29T16:24:44 Z AaronNaidu Ancient Books (IOI17_books) C++14
22 / 100
 170 ms 23032 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

int pos[300000];

ll minimum_walk(vector<int> p, int s) {
    int trueLength = p.size();
    for (int i = 0; i < p.size(); i++)
    {
        pos[p[i]] = i;
    }
    
    for (int i = p.size() - 1; i >= 0; i--)
    {
        if (p[i] == i)
        {
            trueLength--;
        }
        else
        {
            break;
        }
    }
    ll toRet = 0;
    int startPoint = 0;
    int maxSoFar = -1;
    int groups = 0;
    for (int i = 0; i < trueLength; i++)
    {
        toRet += abs(i - p[i]);
        maxSoFar = max(maxSoFar, p[i]);
        if (maxSoFar == i)
        {
        //    cout << "Breaking at " << i << "\n";
            groups++;
            if (i < trueLength - 1)
            {
               // cout << "Adding " << abs(pos[startPoint] - (i+1)) << " for travelling\n";
                //toRet += abs(pos[startPoint] - (i+1));
                startPoint = i+1;
            }
            else
            {
                //cout << "Adjustment adding " << abs(startPoint - p[startPoint]) << " for " << startPoint << "\n";
                //toRet += abs(pos[startPoint] - p[pos[startPoint]]);
            }
            
        }
    }
    //cout << "Adding " << startPoint << " at end\n";
    //toRet += startPoint;
    if (groups == 0)
    {
        groups++;
    }
    
    toRet += 2 * (groups - 1);
    return toRet;
}

Compilation message

books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:9:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < p.size(); i++)
                     ~~^~~~~~~~~~
books.cpp:26:9: warning: variable 'startPoint' set but not used [-Wunused-but-set-variable]
     int startPoint = 0;
         ^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 256 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 256 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 256 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Runtime error 170 ms 23032 KB Execution killed with signal 11 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 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 4 ms 384 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 256 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 5 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Runtime error 170 ms 23032 KB Execution killed with signal 11 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -