#include<bits/stdc++.h>
using namespace std;
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcount
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
void print(vector <int> a) {
cout << "cur:" << endl;
for (int i = 0; i < a.size(); i += 2)
cout << a[i] << ' ';
cout << endl;
for (int i = 1; i < a.size(); i += 2)
cout << a[i] << ' ';
cout << endl;
}
int get(vector <int> a, int x, int R) {
/*
#ifdef HOME
cout << "GET:"<< endl;
#endif
*/
if (a.size() == 2)
return 0;
int n = a.size() / 2;
for (int t = 0; t < R; ++t) {
for (int i = 0; i < a.size(); i += 2) {
if (a[i] > a[i + 1])
swap(a[i], a[i + 1]);
}
/*
#ifdef HOME
print(a);
#endif
*/
if (a[0] == 0) {
bool all2 = 1;
for (int i = 1; i < 2 * n; i += 2) {
if (a[i] != 2) {
all2 = 0;
break;
}
}
if (all2) {
int r = R - t;
for (int i = 0; i < a.size(); ++i)
if (a[i] == x) {
int ans = i / 2;
ans -= r;
return (ans % n + n) % n;
}
}
if (a[1] == 0 && a[0] != x && a[1] != x) {
bool all0 = 1;
for (int i = 0; i < 2 * n; i += 2) {
if (a[i]) {
all0 = 0;
break;
}
}
if (all0) {
for (int i = 0; i < a.size(); ++i) {
if (a[i] == x) {
return i / 2;
}
}
}
}
}
vector <int> b = a;
b[1] = a[2];
for (int i = 4; i < a.size(); i += 2) {
b[i - 2] = a[i];
}
b[(int)b.size() - 2] = a[1];
a = b;
}
for (int i = 0; i < a.size(); ++i)
if (a[i] == x)
return i / 2;
}
signed main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#else
#define endl '\n'
ios_base::sync_with_stdio(0); cin.tie(0);
#endif
int n, R;
cin >> n >> R;
R %= n;
R += 2 * n;
int my;
cin >> my;
vector <int> p(2 * n - 1);
for (int i = 0; i < 2 * n - 1; ++i) {
cin >> p[i];
if (p[i] < my)
p[i] = 0;
else
p[i] = 2;
}
my = 1;
int ans = 1e9;
int start = -1;
vector <int> nd(2 * n, -1);
for (int i = 0; i < 2 * n; i += 2) {
if (nd[i] == -1) {
vector <int> t = p;
t.insert(t.begin() + i, my);
nd[i] = get(t, my, R);
}
if (i && nd[i] > nd[i - 2])
break;
if (nd[i] < ans || (nd[i] == ans && i / 2 > start)) {
ans = nd[i];
start = i / 2;
}
}
for (int i = 2 * n - 1; i >= 0; i -= 2) {
if (nd[i] == -1) {
vector <int> t = p;
t.insert(t.begin() + i, my);
nd[i] = get(t, my, R);
}
if (i + 2 < 2 * n && nd[i] > nd[i + 2])
break;
if (nd[i] < ans || (nd[i] == ans && i / 2 > start)) {
ans = nd[i];
start = i / 2;
}
}
#ifdef HOME
for (int i = 0; i < 2 * n; ++i)
cout << nd[i] << ' ';
cout << endl;
cout << "ans : " << ans << endl;
#endif
cout << start + 1 << endl;
}
Compilation message
archery.cpp: In function 'void print(std::vector<int>)':
archery.cpp:14:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < a.size(); i += 2)
~~^~~~~~~~~~
archery.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 1; i < a.size(); i += 2)
~~^~~~~~~~~~
archery.cpp: In function 'int get(std::vector<int>, int, int)':
archery.cpp:34:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < a.size(); i += 2) {
~~^~~~~~~~~~
archery.cpp:53:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < a.size(); ++i)
~~^~~~~~~~~~
archery.cpp:70:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < a.size(); ++i) {
~~^~~~~~~~~~
archery.cpp:82:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 4; i < a.size(); i += 2) {
~~^~~~~~~~~~
archery.cpp:89:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < a.size(); ++i)
~~^~~~~~~~~~
archery.cpp:92:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Execution timed out |
2051 ms |
384 KB |
Time limit exceeded |
| 3 |
Correct |
13 ms |
384 KB |
Output is correct |
| 4 |
Correct |
167 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
5 ms |
384 KB |
Output is correct |
| 3 |
Correct |
222 ms |
480 KB |
Output is correct |
| 4 |
Execution timed out |
2096 ms |
992 KB |
Time limit exceeded |
| 5 |
Execution timed out |
2088 ms |
6980 KB |
Time limit exceeded |
| 6 |
Correct |
12 ms |
384 KB |
Output is correct |
| 7 |
Correct |
509 ms |
480 KB |
Output is correct |
| 8 |
Execution timed out |
2084 ms |
1416 KB |
Time limit exceeded |
| 9 |
Execution timed out |
2086 ms |
1264 KB |
Time limit exceeded |
| 10 |
Correct |
483 ms |
504 KB |
Output is correct |
| 11 |
Execution timed out |
2080 ms |
1424 KB |
Time limit exceeded |
| 12 |
Execution timed out |
2087 ms |
384 KB |
Time limit exceeded |
| 13 |
Execution timed out |
2084 ms |
5168 KB |
Time limit exceeded |
| 14 |
Correct |
264 ms |
656 KB |
Output is correct |
| 15 |
Execution timed out |
2085 ms |
1840 KB |
Time limit exceeded |
| 16 |
Correct |
15 ms |
384 KB |
Output is correct |
| 17 |
Correct |
506 ms |
384 KB |
Output is correct |
| 18 |
Execution timed out |
2049 ms |
384 KB |
Time limit exceeded |
| 19 |
Execution timed out |
2087 ms |
512 KB |
Time limit exceeded |
| 20 |
Execution timed out |
2085 ms |
816 KB |
Time limit exceeded |
| 21 |
Execution timed out |
2090 ms |
1300 KB |
Time limit exceeded |
| 22 |
Execution timed out |
2085 ms |
1780 KB |
Time limit exceeded |
| 23 |
Execution timed out |
2041 ms |
7416 KB |
Time limit exceeded |
| 24 |
Correct |
17 ms |
384 KB |
Output is correct |
| 25 |
Correct |
1344 ms |
504 KB |
Output is correct |
| 26 |
Execution timed out |
2083 ms |
688 KB |
Time limit exceeded |
| 27 |
Execution timed out |
2089 ms |
1244 KB |
Time limit exceeded |
| 28 |
Execution timed out |
2095 ms |
5268 KB |
Time limit exceeded |
| 29 |
Execution timed out |
2084 ms |
384 KB |
Time limit exceeded |
| 30 |
Execution timed out |
2089 ms |
732 KB |
Time limit exceeded |
| 31 |
Execution timed out |
2087 ms |
1292 KB |
Time limit exceeded |
| 32 |
Execution timed out |
2079 ms |
7200 KB |
Time limit exceeded |
| 33 |
Correct |
15 ms |
384 KB |
Output is correct |
| 34 |
Correct |
5 ms |
384 KB |
Output is correct |
| 35 |
Execution timed out |
2084 ms |
512 KB |
Time limit exceeded |
| 36 |
Execution timed out |
2091 ms |
512 KB |
Time limit exceeded |
| 37 |
Execution timed out |
2093 ms |
1172 KB |
Time limit exceeded |
| 38 |
Execution timed out |
2092 ms |
1340 KB |
Time limit exceeded |
| 39 |
Correct |
17 ms |
384 KB |
Output is correct |
| 40 |
Correct |
1389 ms |
504 KB |
Output is correct |
| 41 |
Execution timed out |
2078 ms |
384 KB |
Time limit exceeded |
| 42 |
Execution timed out |
2099 ms |
384 KB |
Time limit exceeded |
| 43 |
Execution timed out |
2076 ms |
704 KB |
Time limit exceeded |
| 44 |
Execution timed out |
2090 ms |
872 KB |
Time limit exceeded |
| 45 |
Execution timed out |
2071 ms |
1208 KB |
Time limit exceeded |
| 46 |
Execution timed out |
2075 ms |
1272 KB |
Time limit exceeded |
| 47 |
Execution timed out |
2089 ms |
8160 KB |
Time limit exceeded |
