oj.uz

Submission #160805

# Submission time Handle Problem Language Result Execution time Memory
160805 2019-10-30T02:23:53 Z Leonardo_Paes Xylophone (JOI18_xylophone) C++17
100 / 100
 108 ms 464 KB 
#include <bits/stdc++.h>
#include "xylophone.h"

using namespace std;

const int maxn = 5e3+10;

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

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((res[j] + diff1) > n or pos[res[j] + diff1]!=0){
        res[i] = res[j] - diff1;
        pos[res[i]] = i;
    }
    else if((res[j] - diff1) < 1 or 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 8 ms 248 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 3 ms 248 KB Output is correct
7 Correct 3 ms 248 KB Output is correct
8 Correct 3 ms 316 KB Output is correct
9 Correct 3 ms 248 KB Output is correct
10 Correct 3 ms 248 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 248 KB Output is correct
14 Correct 2 ms 316 KB Output is correct
15 Correct 4 ms 248 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 8 ms 248 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 3 ms 248 KB Output is correct
7 Correct 3 ms 248 KB Output is correct
8 Correct 3 ms 316 KB Output is correct
9 Correct 3 ms 248 KB Output is correct
10 Correct 3 ms 248 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 248 KB Output is correct
14 Correct 2 ms 316 KB Output is correct
15 Correct 4 ms 248 KB Output is correct
16 Correct 5 ms 248 KB Output is correct
17 Correct 8 ms 248 KB Output is correct
18 Correct 12 ms 376 KB Output is correct
19 Correct 16 ms 248 KB Output is correct
20 Correct 15 ms 420 KB Output is correct
21 Correct 13 ms 412 KB Output is correct
22 Correct 16 ms 376 KB Output is correct
23 Correct 13 ms 248 KB Output is correct
24 Correct 8 ms 316 KB Output is correct
25 Correct 16 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 18 ms 248 KB Output is correct
28 Correct 15 ms 248 KB Output is correct
29 Correct 18 ms 248 KB Output is correct
30 Correct 14 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 8 ms 248 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 3 ms 248 KB Output is correct
7 Correct 3 ms 248 KB Output is correct
8 Correct 3 ms 316 KB Output is correct
9 Correct 3 ms 248 KB Output is correct
10 Correct 3 ms 248 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 248 KB Output is correct
14 Correct 2 ms 316 KB Output is correct
15 Correct 4 ms 248 KB Output is correct
16 Correct 5 ms 248 KB Output is correct
17 Correct 8 ms 248 KB Output is correct
18 Correct 12 ms 376 KB Output is correct
19 Correct 16 ms 248 KB Output is correct
20 Correct 15 ms 420 KB Output is correct
21 Correct 13 ms 412 KB Output is correct
22 Correct 16 ms 376 KB Output is correct
23 Correct 13 ms 248 KB Output is correct
24 Correct 8 ms 316 KB Output is correct
25 Correct 16 ms 376 KB Output is correct
26 Correct 11 ms 376 KB Output is correct
27 Correct 18 ms 248 KB Output is correct
28 Correct 15 ms 248 KB Output is correct
29 Correct 18 ms 248 KB Output is correct
30 Correct 14 ms 248 KB Output is correct
31 Correct 16 ms 400 KB Output is correct
32 Correct 34 ms 376 KB Output is correct
33 Correct 46 ms 400 KB Output is correct
34 Correct 84 ms 376 KB Output is correct
35 Correct 75 ms 428 KB Output is correct
36 Correct 57 ms 376 KB Output is correct
37 Correct 30 ms 376 KB Output is correct
38 Correct 59 ms 424 KB Output is correct
39 Correct 49 ms 352 KB Output is correct
40 Correct 36 ms 312 KB Output is correct
41 Correct 66 ms 248 KB Output is correct
42 Correct 61 ms 248 KB Output is correct
43 Correct 53 ms 376 KB Output is correct
44 Correct 60 ms 248 KB Output is correct
45 Correct 70 ms 248 KB Output is correct
46 Correct 85 ms 424 KB Output is correct
47 Correct 64 ms 376 KB Output is correct
48 Correct 76 ms 248 KB Output is correct
49 Correct 69 ms 376 KB Output is correct
50 Correct 69 ms 376 KB Output is correct
51 Correct 92 ms 356 KB Output is correct
52 Correct 62 ms 464 KB Output is correct
53 Correct 73 ms 344 KB Output is correct
54 Correct 74 ms 376 KB Output is correct
55 Correct 76 ms 376 KB Output is correct
56 Correct 75 ms 344 KB Output is correct
57 Correct 67 ms 248 KB Output is correct
58 Correct 73 ms 248 KB Output is correct
59 Correct 55 ms 352 KB Output is correct
60 Correct 108 ms 376 KB Output is correct