oj.uz

Submission #851436

# Submission time Handle Problem Language Result Execution time Memory
851436 2023-09-19T18:34:43 Z Andrei Xylophone (JOI18_xylophone) C++17
100 / 100
 65 ms 1464 KB 
#include <bits/stdc++.h>

using namespace std;

int a[5005];
int b[5005];

int diff1[5005];
int diff2[5005];

bool same[5005];

bool bigger[5005];

int query(int s,int t);
void answer(int i,int v);

void solve(int n)
{
    if(n==2)
    {
        answer(1,1);
        answer(2,2);
        return;
    }

    for(int i=1; i<n; i++)
        diff1[i]=query(i,i+1);
    for(int i=1; i<n-1; i++)
        diff2[i]=query(i,i+2);

    for(int i=1; i<n-1; i++)
    {
        if(diff2[i]==diff1[i]+diff1[i+1])
            same[i]=1;
        else
            same[i]=0;
    }

    int sign=1;
    a[1]=0;
    for(int i=1; i<n; i++)
    {
        a[i+1]=a[i]+sign*diff1[i];
        if(i+1<n && same[i]==0)
            sign*=-1;
    }

    sign=-1;
    b[1]=0;
    for(int i=1; i<n; i++)
    {
        b[i+1]=b[i]+sign*diff1[i];
        if(i+1<n && same[i]==0)
            sign*=-1;
    }

    /*
    for(int i=1; i<=n; i++)
        cout<<A[i]<<" ";
    cout<<"\n";
    for(int i=1; i<=n; i++)
        cout<<B[i]<<" ";
    cout<<"\n";
    */

    int minA=n;
    for(int i=1; i<=n; i++)
        minA=min(minA,a[i]);

    int minB=n;
    for(int i=1; i<=n; i++)
        minB=min(minB,b[i]);

    int pminA,pminB;
    for(int i=1; i<=n; i++)
    {
        if(a[i]==minA)
            pminA=i;
        if(b[i]==minB)
            pminB=i;
    }

    if(pminB<pminA)
    {
        for(int i=1; i<=n; i++)
            swap(a[i],b[i]);
        swap(minA,minB);
    }

    for(int i=1; i<=n; i++)
        answer(i,a[i]-minA+1);
}

Compilation message

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:84:5: warning: 'pminB' may be used uninitialized in this function [-Wmaybe-uninitialized]
   84 |     if(pminB<pminA)
      |     ^~
xylophone.cpp:84:5: warning: 'pminA' may be used uninitialized in this function [-Wmaybe-uninitialized]

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 696 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 688 KB Output is correct
9 Correct 1 ms 440 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 436 KB Output is correct
14 Correct 1 ms 436 KB Output is correct
15 Correct 1 ms 444 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 696 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 688 KB Output is correct
9 Correct 1 ms 440 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 436 KB Output is correct
14 Correct 1 ms 436 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 2 ms 692 KB Output is correct
17 Correct 5 ms 1464 KB Output is correct
18 Correct 8 ms 952 KB Output is correct
19 Correct 11 ms 1208 KB Output is correct
20 Correct 8 ms 700 KB Output is correct
21 Correct 8 ms 700 KB Output is correct
22 Correct 9 ms 696 KB Output is correct
23 Correct 8 ms 696 KB Output is correct
24 Correct 9 ms 436 KB Output is correct
25 Correct 10 ms 696 KB Output is correct
26 Correct 11 ms 696 KB Output is correct
27 Correct 13 ms 696 KB Output is correct
28 Correct 8 ms 952 KB Output is correct
29 Correct 7 ms 960 KB Output is correct
30 Correct 10 ms 952 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 440 KB Output is correct
3 Correct 1 ms 444 KB Output is correct
4 Correct 1 ms 436 KB Output is correct
5 Correct 1 ms 600 KB Output is correct
6 Correct 1 ms 696 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 688 KB Output is correct
9 Correct 1 ms 440 KB Output is correct
10 Correct 1 ms 696 KB Output is correct
11 Correct 1 ms 440 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 436 KB Output is correct
14 Correct 1 ms 436 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 2 ms 692 KB Output is correct
17 Correct 5 ms 1464 KB Output is correct
18 Correct 8 ms 952 KB Output is correct
19 Correct 11 ms 1208 KB Output is correct
20 Correct 8 ms 700 KB Output is correct
21 Correct 8 ms 700 KB Output is correct
22 Correct 9 ms 696 KB Output is correct
23 Correct 8 ms 696 KB Output is correct
24 Correct 9 ms 436 KB Output is correct
25 Correct 10 ms 696 KB Output is correct
26 Correct 11 ms 696 KB Output is correct
27 Correct 13 ms 696 KB Output is correct
28 Correct 8 ms 952 KB Output is correct
29 Correct 7 ms 960 KB Output is correct
30 Correct 10 ms 952 KB Output is correct
31 Correct 18 ms 952 KB Output is correct
32 Correct 28 ms 1200 KB Output is correct
33 Correct 52 ms 952 KB Output is correct
34 Correct 53 ms 696 KB Output is correct
35 Correct 53 ms 1200 KB Output is correct
36 Correct 65 ms 744 KB Output is correct
37 Correct 59 ms 944 KB Output is correct
38 Correct 55 ms 748 KB Output is correct
39 Correct 49 ms 956 KB Output is correct
40 Correct 56 ms 952 KB Output is correct
41 Correct 50 ms 1212 KB Output is correct
42 Correct 40 ms 1216 KB Output is correct
43 Correct 58 ms 700 KB Output is correct
44 Correct 54 ms 700 KB Output is correct
45 Correct 53 ms 948 KB Output is correct
46 Correct 55 ms 1212 KB Output is correct
47 Correct 64 ms 708 KB Output is correct
48 Correct 63 ms 696 KB Output is correct
49 Correct 47 ms 1204 KB Output is correct
50 Correct 49 ms 756 KB Output is correct
51 Correct 52 ms 936 KB Output is correct
52 Correct 53 ms 960 KB Output is correct
53 Correct 48 ms 956 KB Output is correct
54 Correct 61 ms 952 KB Output is correct
55 Correct 48 ms 1252 KB Output is correct
56 Correct 62 ms 1196 KB Output is correct
57 Correct 53 ms 704 KB Output is correct
58 Correct 56 ms 1212 KB Output is correct
59 Correct 40 ms 1216 KB Output is correct
60 Correct 56 ms 1196 KB Output is correct