#include <bits/stdc++.h>
#include "xylophone.h"
//#include "Lgrader.cpp"
using namespace std;
template<class T, class T2> inline int chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline int chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const int MAXN = (5042);
int n;
bool check(vector<int> p)
{
vector<bool> used(p.size(), 0);
int pmax, pmin, mx = -1, mn = (int)1e9;
for(int i = 0; i < n; i++)
{
if(chkmax(mx, p[i])) pmax = i;
if(chkmin(mn, p[i])) pmin = i;
if(p[i] >= n) return false;
if(used[p[i]]) return false;
used[p[i]] = true;
}
if((mx != (int)p.size() - 1) || mn != 0 || pmax < pmin)
return false;
return true;
}
int ask(int l, int r) { return query(l + 1, r + 1); }
void fix(vector<int> &p)
{
int mn = 1e9;
for(int &x: p)
chkmin(mn, x);
for(int &x: p)
x += -mn;
//for(int x: p)
// cerr << x << " ";
//cerr << endl << flush;
}
int ask2[MAXN], ask3[MAXN];
int my_ask(int a, int b, int c)
{
int ret = 0;
chkmax(ret, a - b);
chkmax(ret, b - a);
chkmax(ret, a - c);
chkmax(ret, c - a);
chkmax(ret, c - b);
chkmax(ret, b - c);
return ret;
}
void solve(int N)
{
n = N;
for(int i = 0; i + 1 < n; i++) ask2[i] = ask(i, i + 1);
for(int i = 0; i + 2 < n; i++) ask3[i] = ask(i, i + 2);
vector<int> A(n, 0);
A[0] = 0;
A[1] = ask2[0];
for(int i = 2; i < n; i++)
{
if(my_ask(A[i - 2], A[i - 1], A[i - 1] + ask2[i - 1]) == ask3[i - 2]) A[i] = A[i - 1] + ask2[i - 1];
else A[i] = A[i - 1] - ask2[i - 1];
}
fix(A);
if(check(A))
{
for(int i = 0; i < n; i++)
answer(i + 1, A[i] + 1);
return;
}
A.assign(n, 0);
A[0] = 0;
A[1] = -ask2[0];
for(int i = 2; i < n; i++)
{
if(my_ask(A[i - 2], A[i - 1], A[i - 1] + ask2[i - 1]) == ask3[i - 2]) A[i] = A[i - 1] + ask2[i - 1];
else A[i] = A[i - 1] - ask2[i - 1];
}
fix(A);
if(check(A))
{
for(int i = 0; i < n; i++)
answer(i + 1, A[i] + 1);
return;
}
}
Compilation message
xylophone.cpp: In function 'bool check(std::vector<int>)':
xylophone.cpp:27:42: warning: 'pmin' may be used uninitialized in this function [-Wmaybe-uninitialized]
if((mx != (int)p.size() - 1) || mn != 0 || pmax < pmin)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
xylophone.cpp:27:42: warning: 'pmax' may be used uninitialized in this function [-Wmaybe-uninitialized]
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
Output is correct |
| 2 |
Correct |
2 ms |
308 KB |
Output is correct |
| 3 |
Correct |
2 ms |
408 KB |
Output is correct |
| 4 |
Correct |
3 ms |
420 KB |
Output is correct |
| 5 |
Correct |
4 ms |
420 KB |
Output is correct |
| 6 |
Correct |
4 ms |
496 KB |
Output is correct |
| 7 |
Correct |
4 ms |
512 KB |
Output is correct |
| 8 |
Correct |
4 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
568 KB |
Output is correct |
| 10 |
Correct |
7 ms |
568 KB |
Output is correct |
| 11 |
Correct |
5 ms |
568 KB |
Output is correct |
| 12 |
Correct |
5 ms |
568 KB |
Output is correct |
| 13 |
Correct |
4 ms |
568 KB |
Output is correct |
| 14 |
Correct |
5 ms |
568 KB |
Output is correct |
| 15 |
Correct |
4 ms |
568 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
Output is correct |
| 2 |
Correct |
2 ms |
308 KB |
Output is correct |
| 3 |
Correct |
2 ms |
408 KB |
Output is correct |
| 4 |
Correct |
3 ms |
420 KB |
Output is correct |
| 5 |
Correct |
4 ms |
420 KB |
Output is correct |
| 6 |
Correct |
4 ms |
496 KB |
Output is correct |
| 7 |
Correct |
4 ms |
512 KB |
Output is correct |
| 8 |
Correct |
4 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
568 KB |
Output is correct |
| 10 |
Correct |
7 ms |
568 KB |
Output is correct |
| 11 |
Correct |
5 ms |
568 KB |
Output is correct |
| 12 |
Correct |
5 ms |
568 KB |
Output is correct |
| 13 |
Correct |
4 ms |
568 KB |
Output is correct |
| 14 |
Correct |
5 ms |
568 KB |
Output is correct |
| 15 |
Correct |
4 ms |
568 KB |
Output is correct |
| 16 |
Correct |
8 ms |
568 KB |
Output is correct |
| 17 |
Correct |
11 ms |
568 KB |
Output is correct |
| 18 |
Correct |
18 ms |
568 KB |
Output is correct |
| 19 |
Correct |
21 ms |
572 KB |
Output is correct |
| 20 |
Correct |
19 ms |
572 KB |
Output is correct |
| 21 |
Correct |
18 ms |
572 KB |
Output is correct |
| 22 |
Correct |
13 ms |
572 KB |
Output is correct |
| 23 |
Correct |
26 ms |
580 KB |
Output is correct |
| 24 |
Correct |
19 ms |
580 KB |
Output is correct |
| 25 |
Correct |
15 ms |
580 KB |
Output is correct |
| 26 |
Correct |
14 ms |
580 KB |
Output is correct |
| 27 |
Correct |
15 ms |
580 KB |
Output is correct |
| 28 |
Correct |
10 ms |
580 KB |
Output is correct |
| 29 |
Correct |
11 ms |
580 KB |
Output is correct |
| 30 |
Correct |
16 ms |
580 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
Output is correct |
| 2 |
Correct |
2 ms |
308 KB |
Output is correct |
| 3 |
Correct |
2 ms |
408 KB |
Output is correct |
| 4 |
Correct |
3 ms |
420 KB |
Output is correct |
| 5 |
Correct |
4 ms |
420 KB |
Output is correct |
| 6 |
Correct |
4 ms |
496 KB |
Output is correct |
| 7 |
Correct |
4 ms |
512 KB |
Output is correct |
| 8 |
Correct |
4 ms |
512 KB |
Output is correct |
| 9 |
Correct |
5 ms |
568 KB |
Output is correct |
| 10 |
Correct |
7 ms |
568 KB |
Output is correct |
| 11 |
Correct |
5 ms |
568 KB |
Output is correct |
| 12 |
Correct |
5 ms |
568 KB |
Output is correct |
| 13 |
Correct |
4 ms |
568 KB |
Output is correct |
| 14 |
Correct |
5 ms |
568 KB |
Output is correct |
| 15 |
Correct |
4 ms |
568 KB |
Output is correct |
| 16 |
Correct |
8 ms |
568 KB |
Output is correct |
| 17 |
Correct |
11 ms |
568 KB |
Output is correct |
| 18 |
Correct |
18 ms |
568 KB |
Output is correct |
| 19 |
Correct |
21 ms |
572 KB |
Output is correct |
| 20 |
Correct |
19 ms |
572 KB |
Output is correct |
| 21 |
Correct |
18 ms |
572 KB |
Output is correct |
| 22 |
Correct |
13 ms |
572 KB |
Output is correct |
| 23 |
Correct |
26 ms |
580 KB |
Output is correct |
| 24 |
Correct |
19 ms |
580 KB |
Output is correct |
| 25 |
Correct |
15 ms |
580 KB |
Output is correct |
| 26 |
Correct |
14 ms |
580 KB |
Output is correct |
| 27 |
Correct |
15 ms |
580 KB |
Output is correct |
| 28 |
Correct |
10 ms |
580 KB |
Output is correct |
| 29 |
Correct |
11 ms |
580 KB |
Output is correct |
| 30 |
Correct |
16 ms |
580 KB |
Output is correct |
| 31 |
Correct |
34 ms |
580 KB |
Output is correct |
| 32 |
Correct |
54 ms |
688 KB |
Output is correct |
| 33 |
Correct |
114 ms |
688 KB |
Output is correct |
| 34 |
Correct |
45 ms |
692 KB |
Output is correct |
| 35 |
Correct |
54 ms |
692 KB |
Output is correct |
| 36 |
Correct |
39 ms |
692 KB |
Output is correct |
| 37 |
Correct |
54 ms |
692 KB |
Output is correct |
| 38 |
Correct |
84 ms |
692 KB |
Output is correct |
| 39 |
Correct |
66 ms |
692 KB |
Output is correct |
| 40 |
Correct |
58 ms |
700 KB |
Output is correct |
| 41 |
Correct |
93 ms |
700 KB |
Output is correct |
| 42 |
Correct |
86 ms |
700 KB |
Output is correct |
| 43 |
Correct |
97 ms |
700 KB |
Output is correct |
| 44 |
Correct |
89 ms |
700 KB |
Output is correct |
| 45 |
Correct |
95 ms |
704 KB |
Output is correct |
| 46 |
Correct |
78 ms |
720 KB |
Output is correct |
| 47 |
Correct |
75 ms |
720 KB |
Output is correct |
| 48 |
Correct |
95 ms |
720 KB |
Output is correct |
| 49 |
Correct |
121 ms |
720 KB |
Output is correct |
| 50 |
Correct |
61 ms |
720 KB |
Output is correct |
| 51 |
Correct |
106 ms |
720 KB |
Output is correct |
| 52 |
Correct |
94 ms |
720 KB |
Output is correct |
| 53 |
Correct |
88 ms |
720 KB |
Output is correct |
| 54 |
Correct |
100 ms |
720 KB |
Output is correct |
| 55 |
Correct |
49 ms |
720 KB |
Output is correct |
| 56 |
Correct |
99 ms |
720 KB |
Output is correct |
| 57 |
Correct |
100 ms |
720 KB |
Output is correct |
| 58 |
Correct |
132 ms |
720 KB |
Output is correct |
| 59 |
Correct |
96 ms |
720 KB |
Output is correct |
| 60 |
Correct |
53 ms |
720 KB |
Output is correct |
