제출 #84329

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
84329		zoooma13	Baloni (COCI15_baloni)	C++14	40 / 100	2080 ms	132096 KiB

baloni

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define MAX_N 1000006

int N;
vector <int> A;
set<int> os[MAX_N];

multiset <int> ms;

int main()
{
    scanf("%d",&N); assert(N < MAX_N);
    A.resize(N ,0);
    for(int i=0; i<N; i++)
    {
        scanf("%d",&A[i]);
        os[A[i]].insert(i);
        ms.insert(A[i]);
    }

    int Ans = 0;

    set<int>::iterator it;
    while(!ms.empty())
    {
        int i = *prev(ms.end());
        int j = -1;

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

            j = *it;
            ms.erase(ms.find(i));
            os[i].erase(it);
            i--;
        }

        Ans++;
    }

    cout << Ans << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

baloni.cpp: In function 'int main()':
baloni.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N); assert(N < MAX_N);
     ~~~~~^~~~~~~~~
baloni.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&A[i]);
         ~~~~~^~~~~~~~~~~~

• Subtask 1: 40 / 100