#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
//using namespace __gnu_pbds;
#define FOR(i,start,end) for(int i=start;i<(int)(end);i++)
#define FORE(i,start,end) for(int i=start;i<=(int)end;i++)
#define RFOR(i,start,end) for(int i = start; i>end; i--)
#define RFORE(i,start,end) for(int i = start; i>=end; i--)
#define all(a) a.begin(), a.end()
#define mt make_tuple
#define v vector
#define sf scanf
#define pf printf
#define dvar(x) cout << #x << " := " << x << "\n"
#define darr(x,n) FOR(i,0,n) cout << #x << "[" << i << "]" << " := " << x[i] << "\n"
typedef long long ll;
typedef long double ld;
typedef pair<int, int > pii;
typedef pair<ll, ll> pll;
const ll MOD = 1000000007LL;
const ll PRIME = 105943LL;
const int INF = 1e6;
//template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T> void minn(T &a, T b) { a = min(a, b); }
template<class T> void maxx(T &a, T b) { a = max(a, b); }
void io() {
#ifdef LOCAL_PROJECT
freopen("input.in", "r", stdin); freopen("output.out", "w", stdout);
#else
/* online submission */
#endif
ios_base::sync_with_stdio(false); cin.tie(NULL);
}
/*************************COCI 16-17 R3 #5*************************/
const int MAXN = 200000;
int N;
int A[MAXN];
pii incr[MAXN], dcr[MAXN]; // length, #
/*/?????*/
pii genBest() { // length of best, # ways
pii best = { -1,-1 };
FOR(i, 0, N) {
pii temp = { dcr[i].first + incr[i].first - 1, dcr[i].second*incr[i].second };
if (temp.first > best.first)
best = temp;
else if (temp.first == best.first)
best.second += temp.second;
}
return best;
}
void calcIncr() {
RFORE(i, N - 1, 0) {
incr[i] = { 1, 1 };
FOR(j, i + 1, N) if (A[i] < A[j]) {
pii temp = { 1 + incr[j].first, incr[j].second };
if (temp.first > incr[i].first)
incr[i] = temp;
else if (temp.first == incr[i].first)
incr[i].second += temp.second;
}
}
}
void calcDcr() {
RFORE(i, N - 1, 0) {
dcr[i] = { 1, 1 };
FOR(j, i + 1, N) if (A[i] > A[j]) {
pii temp = { 1 + dcr[j].first, dcr[j].second };
if (temp.first > dcr[i].first)
dcr[i] = temp;
else if (temp.first == dcr[i].first)
dcr[i].second += temp.second;
}
}
}
void modd(ll &x) {
x %= MOD;
}
ll pow(ll a, ll p) {
ll ret = 1LL;
while (p) {
if (p & 1LL)
ret *= a;
a *= a;
modd(ret);
modd(a);
p >>= 1;
}
return ret;
}
int main(void) {
io();
cin >> N;
FOR(i, 0, N) cin >> A[i];
calcIncr();
calcDcr();
pii best = genBest();
cout << best.first << "\n";
ll ways = best.second*pow(2, N - best.first);
modd(ways);
cout << ways << "\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
2 ms |
616 KB |
Output is correct |
| 4 |
Correct |
2 ms |
616 KB |
Output is correct |
| 5 |
Correct |
2 ms |
620 KB |
Output is correct |
| 6 |
Correct |
2 ms |
728 KB |
Output is correct |
| 7 |
Incorrect |
6 ms |
752 KB |
Output isn't correct |
| 8 |
Incorrect |
6 ms |
764 KB |
Output isn't correct |
| 9 |
Incorrect |
6 ms |
792 KB |
Output isn't correct |
| 10 |
Incorrect |
6 ms |
820 KB |
Output isn't correct |
| 11 |
Execution timed out |
1076 ms |
2872 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1080 ms |
4004 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1086 ms |
4852 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1083 ms |
6156 KB |
Time limit exceeded |
| 15 |
Execution timed out |
1084 ms |
8120 KB |
Time limit exceeded |
| 16 |
Execution timed out |
1069 ms |
10028 KB |
Time limit exceeded |
| 17 |
Execution timed out |
1081 ms |
11456 KB |
Time limit exceeded |
| 18 |
Execution timed out |
1079 ms |
12880 KB |
Time limit exceeded |
| 19 |
Execution timed out |
1079 ms |
14072 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1085 ms |
15108 KB |
Time limit exceeded |
