#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef pair<ll, int> PILL;
typedef pair<ll, ll> PLL;
const int MAX_N = 1e5+5;
const int M = 1e6;
const ll INF = (ll)(1e18);
const int inf = 1e9;
const ll MOD = 1000000007LL;
void solve() {
}
int n;
vector<PII> a;
vector<vector<PII>> subsets;
int smallest[45], ans[45];
int countConflicts(vector<PII> vec) {
int ret = 0;
int s = vec.size();
sort(vec.begin(), vec.end());
for (int i = 0; i < s; i++) {
for (int j = i+1; j < s; j++) {
if (vec[i].second > vec[j].second) ret++;
}
}
return ret;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) {
smallest[i] = inf;
ans[i] = 0;
}
a.resize(n+1);
for (int i = 0; i < n; i++) {
a[i].first = i+1;
cin >> a[i].second;
}
for (int i = 0; i < (1 << n); i++) {
vector<PII> cur;
for (int j = 0; j < n; j++) {
if (i & (1 << j)) {
cur.push_back(a[j]);
}
}
subsets.push_back(cur);
}
for (auto vec: subsets) {
int s = vec.size();
int conflicts = countConflicts(vec);
if (conflicts < smallest[s]) {
smallest[s] = conflicts;
ans[s] = 1;
} else if (conflicts == smallest[s]) {
ans[s]++;
}
}
for (int i = 1; i <= n; i++) {
cout << smallest[i] << " " << ans[i] << "\n";
}
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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | #include <bits/stdc++.h> using namespace std; typedef unsigned long long ull; typedef long long ll; typedef long double ld; typedef pair<int, int> PII; typedef pair<ll, int> PILL; typedef pair<ll, ll> PLL; const int MAX_N = 1e5+5; const int M = 1e6; const ll INF = (ll)(1e18); const int inf = 1e9; const ll MOD = 1000000007LL; void solve() { } int n; vector<PII> a; vector<vector<PII>> subsets; int smallest[45], ans[45]; int countConflicts(vector<PII> vec) { int ret = 0; int s = vec.size(); sort(vec.begin(), vec.end()); for (int i = 0; i < s; i++) { for (int j = i+1; j < s; j++) { if (vec[i].second > vec[j].second) ret++; } } return ret; } int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n; for (int i = 1; i <= n; i++) { smallest[i] = inf; ans[i] = 0; } a.resize(n+1); for (int i = 0; i < n; i++) { a[i].first = i+1; cin >> a[i].second; } for (int i = 0; i < (1 << n); i++) { vector<PII> cur; for (int j = 0; j < n; j++) { if (i & (1 << j)) { cur.push_back(a[j]); } } subsets.push_back(cur); } for (auto vec: subsets) { int s = vec.size(); int conflicts = countConflicts(vec); if (conflicts < smallest[s]) { smallest[s] = conflicts; ans[s] = 1; } else if (conflicts == smallest[s]) { ans[s]++; } } for (int i = 1; i <= n; i++) { cout << smallest[i] << " " << ans[i] << "\n"; } return 0; } |
English