oj.uz

Submission #160796

# Submission time Handle Problem Language Result Execution time Memory
160796 2019-10-30T02:15:29 Z Leonardo_Paes Xylophone (JOI18_xylophone) C++11
100 / 100
 85 ms 504 KB 
#include <bits/stdc++.h>
#include "xylophone.h"

using namespace std;

const int maxn = 5e3+10;

int n, res[maxn], pos[maxn];

/*int vet[maxn];

int query(int l, int r){
    int mx=0, mn=n+1;
    for(int i=l; i<=r; i++) mx = max(mx, vet[i]);
    for(int i=l; i<=r; i++) mn = min(mn, vet[i]);
    return mx-mn;
}*/

inline void find_1(){
    int ini=1, fim=n, meio, ans=-1;

    while(ini<=fim){
        meio = (ini+fim) >> 1;
        if(query(meio, n)>=(n-1)){
            ans = meio;
            ini = meio+1;
        }
        else{
            fim = meio-1;
        }
    }

    pos[1] = ans;
    res[ans] = 1;
}

inline void find_n(){
    int ini=pos[1]+1, fim=n, meio, ans=-1;

    while(ini<=fim){
        meio = (ini+fim) >> 1;
        if(query(pos[1], meio)>=(n-1)){
            ans = meio;
            fim = meio-1;
        }
        else{
            ini = meio+1;
        }
    }

    pos[n] = ans;
    res[ans] = n;
}

inline void solve_left(int j, int k){
    if(j<=1 or res[j-1]!=0) return;

    int i = j-1;
    int diff1 = query(i, j);

    if(pos[res[j] + diff1]!=0){
        res[i] = res[j] - diff1;
        pos[res[i]] = i;
    }
    else if(pos[res[j] - diff1]!=0){
        res[i] = res[j] + diff1;
        pos[res[i]] = i;
    }
    else{
        int diff2 = query(i, k);

        if(diff1 + abs(res[j]-res[k]) == diff2){
            if(res[k]<res[j]){
                res[i] = res[j] + diff1;
                pos[res[i]] = i;
            }
            else{
                res[i] = res[j] - diff1;
                pos[res[i]] = i;
            }
        }
        else{
            if(res[k]<res[j]){
                res[i] = res[j] - diff1;
                pos[res[i]] = i;
            }
            else{
                res[i] = res[j] + diff1;
                pos[res[i]] = i;
            }
        }

    }
    solve_left(i, j);
}

inline void solve_right(int j, int k){
    if(k>=n or res[k+1]!=0) return;

    int l = k+1;
    int diff1 = query(k, l);

    if((res[k] + diff1) > n or pos[res[k] + diff1]!=0){
        res[l] = res[k] - diff1;
        pos[res[l]] = l;
    }
    else if((res[k] - diff1) < 1 or pos[res[k] - diff1]!=0){
        res[l] = res[k] + diff1;
        pos[res[l]] = l;
    }
    else{
        int diff2 = query(j, l);

        if(diff1 + abs(res[j]-res[k]) == diff2){
            if(res[k]>res[j]){
                res[l] = res[k] + diff1;
                pos[res[l]] = l;
            }
            else{
                res[l] = res[k] - diff1;
                pos[res[l]] = l;
            }
        }
        else{
            if(res[k]>res[j]){
                res[l] = res[k] - diff1;
                pos[res[l]] = l;
            }
            else{
                res[l] = res[k] + diff1;
                pos[res[l]] = l;
            }
        }

    }
    solve_right(k, l);
}

void solve(int N){
    n = N;
    find_1();
    find_n();

    int diff;

    if(pos[1]+1 <= n and res[pos[1]+1] == 0){
        diff = query(pos[1], pos[1]+1);
        res[pos[1]+1] = 1 + diff;
        pos[1+diff] = pos[1]+1;
    }

    if(pos[1]-1 >= 1 and res[pos[1]-1] == 0){
        diff = query(pos[1]-1, pos[1]);
        res[pos[1]-1] = 1 + diff;
        pos[1+diff] = pos[1]-1;
    }

    if(pos[n]+1 <=n and res[pos[n]+1] == 0){
        diff = query(pos[n], pos[n]+1);
        res[pos[n]+1] = n - diff;
        pos[n-diff] = pos[n]+1;
    }

    if(pos[n]-1 >= 1 and res[pos[n]-1] == 0){
        diff = query(pos[n]-1, pos[n]);
        res[pos[n]-1] = n - diff;
        pos[n-diff] = pos[n] - 1;
    }

    solve_left(pos[1]-1, pos[1]);
    solve_left(pos[n]-1, pos[n]);
    solve_right(pos[n], pos[n]+1);

    for(int i=1; i<=n; i++){
        answer(i, res[i]);
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 3 ms 248 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 404 KB Output is correct
6 Correct 4 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 4 ms 248 KB Output is correct
9 Correct 2 ms 316 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 4 ms 248 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 3 ms 400 KB Output is correct
15 Correct 4 ms 252 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 3 ms 248 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 404 KB Output is correct
6 Correct 4 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 4 ms 248 KB Output is correct
9 Correct 2 ms 316 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 4 ms 248 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 3 ms 400 KB Output is correct
15 Correct 4 ms 252 KB Output is correct
16 Correct 8 ms 376 KB Output is correct
17 Correct 9 ms 376 KB Output is correct
18 Correct 15 ms 376 KB Output is correct
19 Correct 19 ms 376 KB Output is correct
20 Correct 14 ms 248 KB Output is correct
21 Correct 18 ms 376 KB Output is correct
22 Correct 17 ms 252 KB Output is correct
23 Correct 14 ms 376 KB Output is correct
24 Correct 18 ms 248 KB Output is correct
25 Correct 9 ms 376 KB Output is correct
26 Correct 10 ms 400 KB Output is correct
27 Correct 24 ms 332 KB Output is correct
28 Correct 15 ms 376 KB Output is correct
29 Correct 21 ms 248 KB Output is correct
30 Correct 23 ms 248 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 3 ms 248 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 404 KB Output is correct
6 Correct 4 ms 248 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 4 ms 248 KB Output is correct
9 Correct 2 ms 316 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 4 ms 248 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 3 ms 400 KB Output is correct
15 Correct 4 ms 252 KB Output is correct
16 Correct 8 ms 376 KB Output is correct
17 Correct 9 ms 376 KB Output is correct
18 Correct 15 ms 376 KB Output is correct
19 Correct 19 ms 376 KB Output is correct
20 Correct 14 ms 248 KB Output is correct
21 Correct 18 ms 376 KB Output is correct
22 Correct 17 ms 252 KB Output is correct
23 Correct 14 ms 376 KB Output is correct
24 Correct 18 ms 248 KB Output is correct
25 Correct 9 ms 376 KB Output is correct
26 Correct 10 ms 400 KB Output is correct
27 Correct 24 ms 332 KB Output is correct
28 Correct 15 ms 376 KB Output is correct
29 Correct 21 ms 248 KB Output is correct
30 Correct 23 ms 248 KB Output is correct
31 Correct 20 ms 400 KB Output is correct
32 Correct 50 ms 336 KB Output is correct
33 Correct 65 ms 356 KB Output is correct
34 Correct 64 ms 352 KB Output is correct
35 Correct 79 ms 348 KB Output is correct
36 Correct 53 ms 248 KB Output is correct
37 Correct 79 ms 248 KB Output is correct
38 Correct 44 ms 252 KB Output is correct
39 Correct 74 ms 376 KB Output is correct
40 Correct 73 ms 348 KB Output is correct
41 Correct 78 ms 352 KB Output is correct
42 Correct 31 ms 312 KB Output is correct
43 Correct 53 ms 456 KB Output is correct
44 Correct 61 ms 352 KB Output is correct
45 Correct 63 ms 248 KB Output is correct
46 Correct 54 ms 348 KB Output is correct
47 Correct 81 ms 248 KB Output is correct
48 Correct 38 ms 400 KB Output is correct
49 Correct 78 ms 376 KB Output is correct
50 Correct 70 ms 376 KB Output is correct
51 Correct 71 ms 248 KB Output is correct
52 Correct 62 ms 468 KB Output is correct
53 Correct 77 ms 376 KB Output is correct
54 Correct 72 ms 468 KB Output is correct
55 Correct 70 ms 376 KB Output is correct
56 Correct 85 ms 248 KB Output is correct
57 Correct 60 ms 340 KB Output is correct
58 Correct 82 ms 504 KB Output is correct
59 Correct 67 ms 248 KB Output is correct
60 Correct 59 ms 352 KB Output is correct