CSES - Putka Open 2020 – 2/5 - Results
Submission details
Task:Torni
Sender:Metabolix
Submission time:2020-09-25 18:51:30 +0300
Language:C++ (C++11)
Status:READY
Result:56
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED41
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s2, 3details
#3--3details

Code

#include <iostream>
#include <algorithm>
#include <vector>
const int MOD = 1000000007;
const int MAX = 1000009;
long tapoja2(int n);
long tapoja12(int n);
long tapoja1(int n) {
static int _t[MAX]; if (_t[n]) return _t[n];
long summa = 0;
summa += 1;
for (int i = 1; i < n; ++i) {
summa += tapoja1(n - i);
summa %= MOD;
}
return _t[n] = summa;
}
long tapoja(int n) {
static int _t[MAX]; if (_t[n]) return _t[n];
long summa = 0;
summa += tapoja2(n);
summa += tapoja12(n);
summa %= MOD;
return _t[n] = summa;
}
long tapoja2(int n) {
static int _t[MAX]; if (_t[n]) return _t[n];
long summa = 0;
// Täytetään 2xn-palalla loppuun.
summa += 1;
summa %= MOD;
// Täytetään 2xi-palalla ja rekursio.
for (int i = 1; i < n; ++i) {
summa += tapoja(n - i);
summa %= MOD;
}
return _t[n] = summa;
}
long tapoja12(int n) {
static int _t[MAX]; if (_t[n]) return _t[n];
long summa = 0;
// Täytetään 1x*-paloilla korkeuteen i ja rekursio 2x*-paloihin.
for (int i = 1; i < n; ++i) {
long t1 = tapoja1(i);
long tt1 = (t1 * t1) % MOD;
summa += tt1 * tapoja2(n - i);
summa %= MOD;
}
// Täytetään 1x*-paloilla loppuun.
long t1 = tapoja1(n);
summa += t1 * t1;
summa %= MOD;
return _t[n] = summa;
}
int main() {
int t;
std::cin >> t;
for (int i = 0; i < t; ++i) {
int n;
std::cin >> n;
std::cout << tapoja(n) << std::endl;
}
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
1
2
3
4
...

correct output
2
8
34
148
650
...

user output
2
8
34
148
650
...

Test 2

Group: 2, 3

Verdict: ACCEPTED

input
100
1
2
3
4
...

correct output
2
8
34
148
650
...

user output
2
8
34
148
650
...
Truncated

Test 3

Group: 3

Verdict:

input
100
996306
650655
896240
821967
...

correct output
87350005
606189151
122595036
193572715
227926807
...

user output
(empty)