Submission #84359

#	Time	Username	Problem	Language	Result	Execution time	Memory
84359		zoooma13	Baloni (COCI15_baloni)	C++14	100 / 100	1571 ms	89220 KiB

baloni

#include <bits/stdc++.h>
using namespace std;

#define MAX_N 1000006

int N ,A;
set<int> ss[MAX_N];

int cnt[MAX_N];
vector <int> nxt;

int main()
{
    scanf("%d",&N);
    for(int i=0; i<N; i++)
    {
        scanf("%d",&A);
        ss[A].insert(i);
        if(!cnt[A]++)
            nxt.push_back(A);
    }

    sort(nxt.begin() ,nxt.end());

    int Ans = 0;
    for(int pt = nxt.size()-1; ~pt;)
    {
        int i = nxt[pt] ,j = -1;

        while(true)
        {
            auto it = ss[i].upper_bound(j);
            if(it == ss[i].end())
                break;

            j = *it;
            ss[i].erase(it);
            --cnt[i--];
        }
        while(~pt && !cnt[nxt[pt]])
            pt--;

        Ans++;
    }

    cout << Ans << endl;
}

Compilation message (stderr)

baloni.cpp: In function 'int main()':
baloni.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~
baloni.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&A);
         ~~~~~^~~~~~~~~

• Subtask 1: 100 / 100