#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5;
const int MOD = 1e9+7;
int n;
int seq[MAXN];
map<int, int> compress;
typedef pair<int, int> pii;
typedef long long ll;
int t = 0;
pii comb(pii a, pii b) {
if (a.first == b.first) return pii(a.first, (a.second+b.second)%MOD);
return max(a, b);
}
class stree {
public:
stree *l = nullptr;
stree *r = nullptr;
pii mx = pii(0, 0);
stree(int lv, int rv) {
if (lv < rv) {
int mid = (lv+rv)/2;
l = new stree(lv, mid);
r = new stree(mid+1, rv);
}
}
void upd(int p, pii v, int lp = 0, int rp = t-1) {
if (lp > p || rp < p) return;
if (lp == rp) {
mx = comb(mx, v);
return;
}
int mid = (lp+rp)/2;
l->upd(p, v, lp, mid);
r->upd(p, v, mid+1, rp);
mx = comb(l->mx, r->mx);
}
void reset() {
mx = pii(0, 0);
if (l) {
l->reset();
r->reset();
}
}
pii query(int lv, int rv, int lp = 0, int rp = t-1) {
if (lp >= lv && rp <= rv) return mx;
if (lp > rv || rp < lv) return pii(0, 0);
int mid = (lp+rp)/2;
return comb(l->query(lv, rv, lp, mid), r->query(lv, rv, mid+1, rp));
}
};
stree *tree;
pii upseq[MAXN];
int main() {
ios_base::sync_with_stdio(false); cin.tie(NULL);
cin >> n;
set<int> vals;
for (int i = 0; i < n; i++) {
cin >> seq[i];
vals.insert(seq[i]);
}
for (int v: vals) {
compress[v] = t++;
}
for (int i = 0; i < n; i++) seq[i] = compress[seq[i]];
tree = new stree(0, t-1);
pii ans(0, 0);
for (int i = n-1; i >= 0; i--) {
upseq[i] = tree->query(seq[i]+1, t-1);
upseq[i].first++;
if (upseq[i].second == 0) upseq[i].second++;
tree->upd(seq[i], upseq[i]);
}
tree->reset();
for (int i = n-1; i >= 0; i--) {
pii downseq = tree->query(0, seq[i]-1);
downseq.first++;
if (downseq.second == 0) downseq.second++;
tree->upd(seq[i], downseq);
ans = comb(ans, pii(upseq[i].first+downseq.first-1, ((ll)upseq[i].second*downseq.second)%MOD));
}
for (int i = 0; i < n-ans.first; i++) ans.second = (2*ans.second)%MOD;
cout << ans.first << " " << ans.second << "\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
0 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
212 KB |
Output is correct |
| 7 |
Correct |
1 ms |
468 KB |
Output is correct |
| 8 |
Correct |
1 ms |
468 KB |
Output is correct |
| 9 |
Correct |
2 ms |
508 KB |
Output is correct |
| 10 |
Correct |
2 ms |
468 KB |
Output is correct |
| 11 |
Correct |
221 ms |
26820 KB |
Output is correct |
| 12 |
Correct |
211 ms |
23460 KB |
Output is correct |
| 13 |
Correct |
186 ms |
21964 KB |
Output is correct |
| 14 |
Correct |
285 ms |
23400 KB |
Output is correct |
| 15 |
Correct |
392 ms |
29056 KB |
Output is correct |
| 16 |
Runtime error |
481 ms |
33600 KB |
Memory limit exceeded |
| 17 |
Correct |
321 ms |
28760 KB |
Output is correct |
| 18 |
Correct |
257 ms |
28824 KB |
Output is correct |
| 19 |
Correct |
279 ms |
28736 KB |
Output is correct |
| 20 |
Correct |
297 ms |
28788 KB |
Output is correct |
