#include <iostream>
#include <vector>
#include <set>
using namespace std;
bool Ok(string s)
{
int bal = 0;
for (int i = 0; i < s.size(); ++i)
{
if (s[i] == 'L')
++bal;
else
--bal;
if (bal < 0)
return false;
}
return bal == 0;
}
int main()
{
ios_base::sync_with_stdio(0);
int n;
cin >> n;
vector<string> a(n);
for (int i = 0; i < n; ++i)
cin >> a[i];
for (int i = 0; i < n; ++i)
{
for (int j = 0; j < n; ++j)
{
set<string> S;
string s = a[i] + a[j];
for (int mask = 1; mask < (1 << (int) s.size()); ++mask)
{
string p = "";
for (int k = 0; k < s.size(); ++k)
if ((mask & (1 << k)) > 0)
p += s[k];
if (Ok(p))
S.insert(p);
}
cout << S.size() << " ";
}
cout << endl;
}
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | #include <iostream> #include <vector> #include <set> using namespace std; bool Ok(string s) { int bal = 0; for (int i = 0; i < s.size(); ++i) { if (s[i] == 'L') ++bal; else --bal; if (bal < 0) return false; } return bal == 0; } int main() { ios_base::sync_with_stdio(0); int n; cin >> n; vector<string> a(n); for (int i = 0; i < n; ++i) cin >> a[i]; for (int i = 0; i < n; ++i) { for (int j = 0; j < n; ++j) { set<string> S; string s = a[i] + a[j]; for (int mask = 1; mask < (1 << (int) s.size()); ++mask) { string p = ""; for (int k = 0; k < s.size(); ++k) if ((mask & (1 << k)) > 0) p += s[k]; if (Ok(p)) S.insert(p); } cout << S.size() << " "; } cout << endl; } return 0; } |
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