// Problem: Ranking sklepów internetowych [C] // https://sio2.mimuw.edu.pl/c/pa-2021-1/p/ran/ #include <cstdio> #include <cmath> #include <iostream> #include <algorithm> #include <string> #include <cctype> #include <vector> #include <set> #include <map> #include <unordered_map> using namespace std; #define REP(i,n) for(int _n=(n), i=0;i<_n;++i) #define FOR(i,a,b) for(int i=(a),_b=(b);i<=_b;++i) #define FORD(i,a,b) for(int i=(a),_b=(b);i>=_b;--i) #define FOREACH(e, v) for(auto const &e: v) #define IN(e, s) (s).find((e)) != (s).end() #define TRACE(x) cerr << "TRACE(" #x ")" << endl; #define DEBUG(x) cerr << #x << " = " << (x) << endl; #define PB push_back #define ST first #define ND second #define ALL(c) (c).begin(), (c).end() #define SZ(x) ((int)(x).size()) typedef long long LL; typedef unsigned long long ULL; typedef unsigned short UST; typedef unsigned int UINT; typedef vector<int> VI; inline void fix_io() { cin.tie(nullptr); ios::sync_with_stdio(false); } ULL target(double x, double y) { return x + 2 * y; } int main() { fix_io(); UINT n; vector<UINT> v; unordered_map<ULL, ULL> m; cin >> n; FOR(i,1,n) { UINT ai; cin >> ai; v.PB(ai); } FOR(i,0,n-1) { FOR(j,0,n-1) { vector<UINT> tv; FOR(k,i,j) { tv.PB(v[k]); } sort(tv.begin(),tv.end()); UINT n = tv.size(); if (n == 0) continue; double median; if (n%2 == 0) { median = 0.5 * ((double)tv[(n-1)/2] + (double)tv[n/2]); } else { median = tv[n/2]; } ULL t = target(tv.size(), median); // cout << "for i=" << i << ", j=" << j << " target=" << t << endl; m[t]++; } } ULL max = 0; ULL max_c = 0; for (auto x : m) { if (x.first > max) { max = x.first; max_c = x.second; } } cout << max << " " << max_c << '\n'; }
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 | // Problem: Ranking sklepów internetowych [C] // https://sio2.mimuw.edu.pl/c/pa-2021-1/p/ran/ #include <cstdio> #include <cmath> #include <iostream> #include <algorithm> #include <string> #include <cctype> #include <vector> #include <set> #include <map> #include <unordered_map> using namespace std; #define REP(i,n) for(int _n=(n), i=0;i<_n;++i) #define FOR(i,a,b) for(int i=(a),_b=(b);i<=_b;++i) #define FORD(i,a,b) for(int i=(a),_b=(b);i>=_b;--i) #define FOREACH(e, v) for(auto const &e: v) #define IN(e, s) (s).find((e)) != (s).end() #define TRACE(x) cerr << "TRACE(" #x ")" << endl; #define DEBUG(x) cerr << #x << " = " << (x) << endl; #define PB push_back #define ST first #define ND second #define ALL(c) (c).begin(), (c).end() #define SZ(x) ((int)(x).size()) typedef long long LL; typedef unsigned long long ULL; typedef unsigned short UST; typedef unsigned int UINT; typedef vector<int> VI; inline void fix_io() { cin.tie(nullptr); ios::sync_with_stdio(false); } ULL target(double x, double y) { return x + 2 * y; } int main() { fix_io(); UINT n; vector<UINT> v; unordered_map<ULL, ULL> m; cin >> n; FOR(i,1,n) { UINT ai; cin >> ai; v.PB(ai); } FOR(i,0,n-1) { FOR(j,0,n-1) { vector<UINT> tv; FOR(k,i,j) { tv.PB(v[k]); } sort(tv.begin(),tv.end()); UINT n = tv.size(); if (n == 0) continue; double median; if (n%2 == 0) { median = 0.5 * ((double)tv[(n-1)/2] + (double)tv[n/2]); } else { median = tv[n/2]; } ULL t = target(tv.size(), median); // cout << "for i=" << i << ", j=" << j << " target=" << t << endl; m[t]++; } } ULL max = 0; ULL max_c = 0; for (auto x : m) { if (x.first > max) { max = x.first; max_c = x.second; } } cout << max << " " << max_c << '\n'; } |