#include<bits/stdc++.h>
#define TSun(TZ) freopen(TZ".inp", "r", stdin), freopen(TZ".out", "w", stdout);
#define TaZinh "test"
using namespace std;
#define fi first
#define se second
#define mp make_pair
#define PB push_back
#define ll long long
#define pii pair<int, int>
#define SZ(a) (int)(a.size())
#define ALL(a) a.begin(), a.end()
#define MS(a, v) memset(a, v, sizeof a)
#define REP(i, n) for(int i = 0; i < (n); ++ i)
#define FOR(i, a, b) for(int i = (a); i <= (b); ++ i)
#define FOD(i, a, b) for(int i = (a); i >= (b); -- i)
template<class X, class Y>
bool maximize(X &x, const Y & y){
if(x < y){
x = y;
return true;
}
else return false;
}
template<class X, class Y>
bool minimize(X &x, const Y & y){
if(x > y){
x = y;
return true;
}
else return false;
}
const int N = 200005;
const int mod = 1e9 + 7;
int n, a[N], f1[N], g1[N], f2[N], g2[N];
int up1[N], up2[N], dw1[N], dw2[N];
int Pow(int a, int b){
int res = 1;
while(b > 0){
if(b & 1) res = 1ll * res * a % mod;
a = 1ll * a * a % mod; b >>= 1;
}
return res;
}
void add(int &a, int b){
a += b;
if(a >= mod) a -= mod;
}
int main(){
ios_base :: sync_with_stdio(0);
cin.tie(0); cout.tie(0);
if(fopen(TaZinh".inp", "r"))
TSun(TaZinh);
cin >> n;
FOR(i, 1, n) cin >> a[i];
FOR(i, 1, n){
f1[i] = f2[i] = up1[i] = up2[i] = 1;
FOR(j, 1, i - 1){
if(a[j] < a[i]){
if(maximize(f1[i], f1[j] + 1))
up1[i] = up1[j];
else if(f1[i] == f1[j] + 1)
add(up1[i], up1[j]);
}
if(a[j] > a[i]){
if(maximize(f2[i], f2[j] + 1))
up1[i] = up1[j];
else if(f2[i] == f2[j] + 1)
add(up1[i], up1[j]);
}
}
}
int len = 0;
FOD(i, n, 1){
g1[i] = g2[i] = dw1[i] = dw2[i] = 1;
FOR(j, i + 1, n){
if(a[j] > a[i]){
if(maximize(g2[i], g2[j] + 1))
dw2[i] = dw2[j];
else if(g2[i] == g2[j] + 1)
add(dw2[i], dw2[j]);
}
if(a[j] < a[i]){
if(maximize(g1[i], g1[j] + 1))
dw1[i] = dw1[j];
else if(g1[i] == g1[j] + 1)
add(dw1[i], dw1[j]);
}
}
maximize(len, f1[i] + g1[i] - 1);
maximize(len, f2[i] + g2[i] - 1);
}
int cnt = 0;
FOR(i, 1, n){
// if(f1[i] + g1[i] == len + 1)
// add(cnt, 1ll * up1[i] * dw1[i] % mod);
if(g1[i] + g2[i] == len + 1)
add(cnt, 1ll * dw1[i] * dw2[i] % mod);
}
cout << len << " " << 1ll * cnt * Pow(2, n - len) % mod;
return 0;
}
Compilation message
zoltan.cpp: In function 'int main()':
zoltan.cpp:2:25: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
2 | #define TSun(TZ) freopen(TZ".inp", "r", stdin), freopen(TZ".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
zoltan.cpp:64:17: note: in expansion of macro 'TSun'
64 | TSun(TaZinh);
| ^~~~
zoltan.cpp:2:56: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
2 | #define TSun(TZ) freopen(TZ".inp", "r", stdin), freopen(TZ".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
zoltan.cpp:64:17: note: in expansion of macro 'TSun'
64 | TSun(TaZinh);
| ^~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 4 |
Correct |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
344 KB |
Output is correct |
| 7 |
Incorrect |
3 ms |
468 KB |
Output isn't correct |
| 8 |
Incorrect |
3 ms |
348 KB |
Output isn't correct |
| 9 |
Incorrect |
3 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
3 ms |
468 KB |
Output isn't correct |
| 11 |
Execution timed out |
1091 ms |
2892 KB |
Time limit exceeded |
| 12 |
Execution timed out |
1090 ms |
2640 KB |
Time limit exceeded |
| 13 |
Execution timed out |
1048 ms |
2640 KB |
Time limit exceeded |
| 14 |
Execution timed out |
1022 ms |
2708 KB |
Time limit exceeded |
| 15 |
Execution timed out |
1056 ms |
3000 KB |
Time limit exceeded |
| 16 |
Execution timed out |
1033 ms |
3412 KB |
Time limit exceeded |
| 17 |
Execution timed out |
1060 ms |
3076 KB |
Time limit exceeded |
| 18 |
Execution timed out |
1002 ms |
3148 KB |
Time limit exceeded |
| 19 |
Execution timed out |
1032 ms |
3152 KB |
Time limit exceeded |
| 20 |
Execution timed out |
1020 ms |
2904 KB |
Time limit exceeded |
