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Submission #996094

# Submission time Handle Problem Language Result Execution time Memory
996094 2024-06-10T07:56:24 Z vjudge1 Xylophone (JOI18_xylophone) C++17
100 / 100
 130 ms 948 KB 
#include<bits/stdc++.h>
#include "xylophone.h"
#define ll long long
#define ull unsigned long long
#define ld long double
#define pb push_back
#define pf push_front
#define vi vector<ll>
#define vii vector<vi>
#define pint pair<int,int>
#define vpll vector<pll>
#define aint(a) a.begin(), a.end()
#define fi first
#define se second
using namespace std;
const ll mod = 1e9+7;
const ll inf = 1e18;
const ll base = 31;
const ll blocksz = 320;
const ll N = 5e3+8;
const ll buff = 1e5+1;
int a[N],dist[N][2];
bool pos[N];
bool check(int n){
    fill(pos,pos+n+1,0);
    bool meetn = 0;
    for(int i = 1; i <= n; i++){
        if(a[i] <= 0 || a[i] > n) return 0;
        if(a[i] == 1 && meetn) return 0;
        pos[a[i]] = 1;
        if(a[i] == n) meetn = 1; 
    }
    for(ll i = 1; i <= n; i++) if(!pos[i]) return 0;
    return 1;
}
void solve(int n){
    for(int i = 2; i <= n; i++){
        if(i > 1) dist[i][0] = query(i-1,i);
        if(i > 2) dist[i][1] = query(i-2,i);
    }
    for(int x = 1; x <= n; x++){
        a[1] = x;
        a[2] = x+dist[2][0];
        for(int i = 3; i <= n; i++){
            if(a[i-2] > a[i-1]){
                if (a[i-2]-a[i-1]+dist[i][0] == dist[i][1]) a[i] = a[i-1]-dist[i][0];
                else a[i] = a[i-1]+dist[i][0];
            }
            else{
                if (a[i-1]-a[i-2]+dist[i][0] == dist[i][1]) a[i] = a[i-1]+dist[i][0];
                else a[i] = a[i-1]-dist[i][0];
            }
        }
        if(check(n)) break;
        a[1] = x;
        a[2] = x-dist[2][0];
        for(int i = 3; i <= n; i++){
            if(a[i-2] > a[i-1]){
                if (a[i-2]-a[i-1]+dist[i][0] == dist[i][1]) a[i] = a[i-1]-dist[i][0];
                else a[i] = a[i-1]+dist[i][0];
            }
            else{
                if (a[i-1]-a[i-2]+dist[i][0] == dist[i][1]) a[i] = a[i-1]+dist[i][0];
                else a[i] = a[i-1]-dist[i][0];
            }
        }
        if(check(n)) break;
    }
    for(int i = 1; i <= n; i++) answer(i,a[i]);
}

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 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 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 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 8 ms 596 KB Output is correct
18 Correct 12 ms 344 KB Output is correct
19 Correct 8 ms 344 KB Output is correct
20 Correct 17 ms 600 KB Output is correct
21 Correct 11 ms 448 KB Output is correct
22 Correct 15 ms 344 KB Output is correct
23 Correct 9 ms 344 KB Output is correct
24 Correct 15 ms 448 KB Output is correct
25 Correct 11 ms 344 KB Output is correct
26 Correct 13 ms 456 KB Output is correct
27 Correct 10 ms 340 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 10 ms 700 KB Output is correct
30 Correct 8 ms 600 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 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 2 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 8 ms 596 KB Output is correct
18 Correct 12 ms 344 KB Output is correct
19 Correct 8 ms 344 KB Output is correct
20 Correct 17 ms 600 KB Output is correct
21 Correct 11 ms 448 KB Output is correct
22 Correct 15 ms 344 KB Output is correct
23 Correct 9 ms 344 KB Output is correct
24 Correct 15 ms 448 KB Output is correct
25 Correct 11 ms 344 KB Output is correct
26 Correct 13 ms 456 KB Output is correct
27 Correct 10 ms 340 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 10 ms 700 KB Output is correct
30 Correct 8 ms 600 KB Output is correct
31 Correct 28 ms 600 KB Output is correct
32 Correct 53 ms 684 KB Output is correct
33 Correct 64 ms 696 KB Output is correct
34 Correct 80 ms 700 KB Output is correct
35 Correct 100 ms 692 KB Output is correct
36 Correct 69 ms 688 KB Output is correct
37 Correct 96 ms 592 KB Output is correct
38 Correct 56 ms 700 KB Output is correct
39 Correct 58 ms 712 KB Output is correct
40 Correct 89 ms 592 KB Output is correct
41 Correct 91 ms 688 KB Output is correct
42 Correct 48 ms 700 KB Output is correct
43 Correct 130 ms 852 KB Output is correct
44 Correct 44 ms 592 KB Output is correct
45 Correct 75 ms 704 KB Output is correct
46 Correct 99 ms 444 KB Output is correct
47 Correct 109 ms 856 KB Output is correct
48 Correct 53 ms 440 KB Output is correct
49 Correct 130 ms 592 KB Output is correct
50 Correct 104 ms 948 KB Output is correct
51 Correct 53 ms 700 KB Output is correct
52 Correct 59 ms 456 KB Output is correct
53 Correct 98 ms 712 KB Output is correct
54 Correct 91 ms 344 KB Output is correct
55 Correct 99 ms 692 KB Output is correct
56 Correct 102 ms 596 KB Output is correct
57 Correct 107 ms 676 KB Output is correct
58 Correct 100 ms 344 KB Output is correct
59 Correct 89 ms 444 KB Output is correct
60 Correct 85 ms 676 KB Output is correct