Submission #84345

#	Time	Username	Problem	Language	Result	Execution time	Memory
84345		zoooma13	Baloni (COCI15_baloni)	C++14	100 / 100	1377 ms	97256 KiB

baloni

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

#define MAX_N 1000006

inline int GI() {
	int GIR = 0; char GIC = getchar();
	while(GIC < '0' || '9' < GIC)
		GIC = getchar();
	while('0' <= GIC && GIC <= '9') {
		GIR = (GIR * 10) + (GIC - '0');
		GIC = getchar();
	}
	return GIR;
}

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

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

int main()
{
    N = GI();
    for(int i=0; i<N; i++)
    {
        A = GI();
        ss[A].insert(i);
        cnt[A]++;
        nxt.push_back(A);
    }

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

    int Ans = 0 ,pt = nxt.size()-1;
    set<int>::iterator it;
    while(~pt)
    {
        int i = nxt[pt];
        int j = -1;

        while(true)
        {
            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;
}

• Subtask 1: 100 / 100