Submission #1789901
Source Code Expand
#include <iostream> #include <vector> using namespace std; typedef long long ll; ll c[51][51]; void comb_table(int n) { for (int i = 0; i <= n; i++) { c[i][0] = 1LL; c[i][i] = 1LL; for (int j = 1; j < i; j++) { c[i][j] = c[i - 1][j - 1] + c[i - 1][j]; } } } int main(void) { int n, a, b; cin >> n >> a >> b; vector<ll> v(n); for (int i = 0; i < n; i++) { cin >> v[i]; } sort(v.begin(), v.end(), greater<int>()); double sum = 0.0; for (int i = 0; i < a; i++) { sum += v[i]; } cout.precision(20); cout << sum / a << endl; int cnt1 = 0, cnt2 = 0; for (int i = 0; i < n; i++) { if (v[i] == v[a - 1]) { cnt1++; if (i < a) { cnt2++; } } } comb_table(n); ll ans = 0LL; if (cnt2 != a) { ans = c[cnt1][cnt2]; } else { for (int i = a; i <= b; i++) { ans += c[cnt1][i]; } } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
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Task | D - Maximum Average Sets |
User | comethelp |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 971 Byte |
Status | CE |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:22:42: error: ‘sort’ was not declared in this scope sort(v.begin(), v.end(), greater<int>()); ^