# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
537417 |
2022-03-15T05:24:31 Z |
maomao90 |
Kpart (eJOI21_kpart) |
C++17 |
|
2000 ms |
720 KB |
// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h>
using namespace std;
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
#ifndef DEBUG
#define cerr if (0) cerr
#endif
#define INF 1000000005
#define LINF 1000000000000000005ll
#define MAXN 1005
#define MAXA 100005
int t;
int n;
int a[MAXN];
bool valid[MAXN];
int dp[MAXA];
int main() {
#ifndef DEBUG
ios::sync_with_stdio(0), cin.tie(0);
#endif
cin >> t;
while (t--) {
cin >> n;
REP (i, 0, n) {
cin >> a[i];
}
REP (i, 1, n + 1) {
valid[i] = 0;
}
REP (k, 2, n + 1) {
if (valid[k]) continue;
int sm = 0;
REP (i, 0, k) {
sm += a[i];
}
if (sm % 2 == 1) {
continue;
}
bool pos = 1;
REP (i, k, n) {
if (a[i] % 2 != a[i % k] % 2) {
pos = 0;
break;
}
}
if (!pos) continue;
cerr << k << '\n';
memset(dp, 0, sizeof dp);
dp[0] = 1;
sm = 0;
auto add = [&] (int x) {
sm += x;
RREP (i, MAXA - 1, x) {
dp[i] += dp[i - x];
}
};
auto remove = [&] (int x) {
sm -= x;
REP (i, x, MAXA) {
dp[i] -= dp[i - x];
}
};
REP (i, 0, k) {
add(a[i]);
}
REP (i, 0, n - k + 1) {
if (!dp[sm / 2]) {
pos = 0;
break;
}
if (i == n - k) continue;
remove(a[i]);
add(a[i + k]);
}
if (!pos) continue;
for (int i = k; i <= n; i += k) {
valid[i] = 1;
}
}
vi ans;
REP (k, 2, n + 1) {
if (valid[k]) {
ans.pb(k);
}
}
cout << ans.size();
for (int i : ans) {
cout << ' ' << i;
}
cout << '\n';
}
return 0;
}
/*
2
7
7 3 5 1 3 3 5
6
1 2 3 5 8 3
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
207 ms |
708 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1116 ms |
712 KB |
Output is correct |
2 |
Execution timed out |
2052 ms |
596 KB |
Time limit exceeded |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
2085 ms |
720 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |