#include <bits/stdc++.h>
using namespace std;
#define int long long
void add(set<int> &si, int x) {
queue<int> qi;
qi.push(x);
while(!qi.empty()) {
int tmp = qi.front();
qi.pop();
if(si.count(tmp)) {
si.erase(tmp);
if(tmp==1) {
qi.push(2);
} else if(tmp==2) {
qi.push(1);
qi.push(3);
} else {
qi.push(tmp-2);
qi.push(tmp + 1);
}
continue;
} else if(si.count(tmp + 1)) {
si.erase(tmp + 1);
qi.push(tmp + 2);
} else if(si.count(tmp - 1)) {
si.erase(tmp - 1);
qi.push(tmp + 1);
} else {
si.insert(tmp);
}
}
}
const int mod = 1e9+7;
map<int,map<set<int>,int>> msii;
int state(set<int> vi, int cur) {
if(vi.empty())
return 1;
int x = *vi.rbegin();
if(msii[cur].count(vi))
return msii[cur][vi];
auto it = &msii[cur][vi];
int total = 0;
vi.erase(x);
if( x <=cur) {
total += state(vi,x - 1);
}
if(x - 1<=cur && x>2)
{
add(vi, x - 2);
total += state(vi,x - 2);
}
vi.insert(x);
*it = total%mod;
// if(x==2 && cur==4) {
// cout<<"TOTAL = "<<total<<'\n';
// }
return total % mod;
}
int32_t main() {
int n;
cin>>n;
vector<int> vi(n);
for(auto &a:vi)
cin>>a;
set<int> cur;
for(auto a:vi) {
add(cur,a);
// cout<<"CUR\n";
// for(auto a:cur)
// cout<<a<<' ';
// cout<<"\n";
cout<<state(cur, 1e10)<<"\n";
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
18 ms |
5664 KB |
Output is correct |
9 |
Correct |
3 ms |
860 KB |
Output is correct |
10 |
Correct |
16 ms |
5212 KB |
Output is correct |
11 |
Correct |
5 ms |
1748 KB |
Output is correct |
12 |
Correct |
3 ms |
604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
46 ms |
13316 KB |
Output is correct |
2 |
Runtime error |
349 ms |
262144 KB |
Execution killed with signal 9 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
18 ms |
5664 KB |
Output is correct |
9 |
Correct |
3 ms |
860 KB |
Output is correct |
10 |
Correct |
16 ms |
5212 KB |
Output is correct |
11 |
Correct |
5 ms |
1748 KB |
Output is correct |
12 |
Correct |
3 ms |
604 KB |
Output is correct |
13 |
Correct |
46 ms |
13316 KB |
Output is correct |
14 |
Runtime error |
349 ms |
262144 KB |
Execution killed with signal 9 |
15 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
356 ms |
262144 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
18 ms |
5664 KB |
Output is correct |
9 |
Correct |
3 ms |
860 KB |
Output is correct |
10 |
Correct |
16 ms |
5212 KB |
Output is correct |
11 |
Correct |
5 ms |
1748 KB |
Output is correct |
12 |
Correct |
3 ms |
604 KB |
Output is correct |
13 |
Correct |
46 ms |
13316 KB |
Output is correct |
14 |
Runtime error |
349 ms |
262144 KB |
Execution killed with signal 9 |
15 |
Halted |
0 ms |
0 KB |
- |