#include "xylophone.h"
using namespace std;
#include <bits/stdc++.h>
static int A[5005];
int n;
int d2[5005], d3[5005];
void pr(const vector<int>& a) {
cout << "VEC:\n";
for (int i: a) cout << i << ' ';
cout << '\n';
}
bool check(const vector<int>& v) {
pr(v);
for (int i = 0; i < n; i++) if (v[i] <= 0 || v[i] > n) return false;
for (int i = 0; i < n - 1; i++) {
if (abs(v[i+1]-v[i]) != d2[i+1]) return false;
}
for (int i = 0; i < n - 2; i++) {
int d = max(abs(v[i+2]-v[i+1]),max(abs(v[i+1]-v[i]),abs(v[i+2]-v[i])));
if (d != d3[i+1]) return false;
}
//sanity checks
int pos1 = -1, posn = -1;
for (int i = 0; i < n; i++) {
if (v[i] == 1) pos1 = i;
else if (v[i] == n) posn = i;
}
if (pos1 == -1 || pos1 == -1) return false;
if (pos1 > posn) return false;
return true;
}
bool tr(int i) {
//cout << "starting " << i << endl;
vector<int> a, b;
a.push_back(i);
b.push_back(i);
if (d3[1] == d2[1] + d2[2]) {
a.push_back(a.back()+d2[1]);
a.push_back(a.back()+d2[2]);
b.push_back(b.back()-d2[1]);
b.push_back(b.back()-d2[2]);
}
else {
a.push_back(a.back()+d2[1]);
a.push_back(a.back()-d2[2]);
b.push_back(b.back()-d2[1]);
b.push_back(b.back()+d2[2]);
}
for (int j = 2; j <= n - 2; j++) {
vector<int>& aa = a;
vector<int>& bb = b;
if (a.back() < a[a.size()-2]) swap(a,b);
if (d3[j] == d2[j] + d2[j+1]) {
a.push_back(a.back()+d2[j+1]);
b.push_back(b.back()-d2[j+1]);
}
else {
a.push_back(a.back()-d2[j+1]);
b.push_back(b.back()+d2[j+1]);
}
}
if (check(a)) {
for (int i = 0; i < n; i++) {
answer(i+1,a[i]);
cout << (i+1) << ": " << a[i] << endl;
}
return true;
}
else if (check(b)) {
for (int i = 0; i < n; i++) {
answer(i+1,b[i]);
cout << (i+1) << ": " << b[i] << endl;
}
return true;
}
return false;
}
void solve(int N) {
n = N;
for (int i = 1; i <= N - 1; i++) {
d2[i] = query(i,i+1);
//cout << i << ' ' << i+1 << ": " << d2[i] << '\n';
}
for (int i = 1; i <= N - 2; i++) {
d3[i] = query(i,i+2);
//cout << i << ' ' << i+2 << ": " << d3[i] << '\n';
}
for (int i = 1; i <= N; i++) {
if (tr(i)) break;
}
}
Compilation message
xylophone.cpp: In function 'bool tr(int)':
xylophone.cpp:56:22: warning: unused variable 'aa' [-Wunused-variable]
vector<int>& aa = a;
^~
xylophone.cpp:57:22: warning: unused variable 'bb' [-Wunused-variable]
vector<int>& bb = b;
^~
xylophone.cpp: At global scope:
xylophone.cpp:5:12: warning: 'A' defined but not used [-Wunused-variable]
static int A[5005];
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
304 KB |
Expected integer, but "VEC:" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
304 KB |
Expected integer, but "VEC:" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
304 KB |
Expected integer, but "VEC:" found |
| 2 |
Halted |
0 ms |
0 KB |
- |
