Submission #865565

#	Time	Username	Problem	Language	Result	Execution time	Memory
865565		Rifal	Diversity (CEOI21_diversity)	C++14	0 / 100	1 ms	464 KiB

diversity

#include <bits/stdc++.h>
#include <fstream>
//#define endl '\n'
#define mod 1000000007
#define INF 9000000000000000
using namespace std;
//ofstream fout("intel.out");
//ifstream fin("intel.in");
const int Max = 3e5 + 5;
int cnt[Max];
int main()
{
    ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
    int n, q; cin >> n >> q;
    long long sum = 0; long long dp[n+1] = {}; long long arr[n];
    for(int i = 1; i <= n; i++) dp[i] = 1;
    pair<long long,long long> mn1 = {INF,0}, mn2 = {INF,0};
    for(int i = 0; i < n; i++) {
         cin >> arr[i];
         cnt[arr[i]]++;
    }
    for(int i = 1; i < Max; i++) {
        if(cnt[i] != 0) {
            if(mn1.first > cnt[i]) {
                mn2.first = mn1.first;
                mn2.second = mn1.second;
                mn1.first = cnt[i];
                mn1.second = i;
            }
            else if(mn2.first > cnt[i]) {
                mn2.first = cnt[i];
                mn2.second = i;
            }
        }
    }
    vector<int> v;
    while(cnt[mn1.second]--) {
        v.push_back(mn1.second);
    }
    for(int i = 1; i < Max; i++) {
        if(i == mn1.second || i == mn2.second) continue;
        if(cnt[i] != 0) {
            while(cnt[i]--) {
                v.push_back(i);
            }
        }
    }
    while(cnt[mn2.second]--) {
        v.push_back(mn2.second);
    }

    if(q == 1) {
        int l, r; cin >> l >> r;
        sum += dp[1];
        for(long long i = 1; i < v.size(); i++) {
            if(v[i] != v[i-1]) {
                dp[i+1] += i;
            }
            dp[i+1] += dp[i];
            sum += dp[i+1];
        }
        cout << sum << endl;
    }
    return 0;
}

Compilation message (stderr)

diversity.cpp: In function 'int main()':
diversity.cpp:55:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(long long i = 1; i < v.size(); i++) {
      |                              ~~^~~~~~~~~~

• Subtask 1: 0 / 4
• Subtask 2: 0 / 10
• Subtask 3: 0 / 8
• Subtask 4: 0 / 16
• Subtask 5: 0 / 26
• Subtask 6: 0 / 36