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답안 #168876

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
168876 2019-12-16T20:10:22 Z Asamu13 Baloni (COCI15_baloni) C++14
100 / 100
 1202 ms 96060 KB 
#include<bits/stdc++.h>
#define inf INT_MAX
#define sc(a) scanf("%d",&a)
#define scc(a,b) scanf("%d %d",&a,&b)
#define sccc(a,b,c) scanf("%d %d %d",&a,&b,&c)
#define pf(a) printf("%d",a)
#define pff(a,b) printf("%d %d",a,b)
#define pfff(a,b,c) printf("%d %d %d",a,b,c)
#define pb(a) push_back(a)
#define em empty()
#define fr front()
#define cl clear()
#define sz size()
#define mp(a,b) make_pair(a,b)
#define fri(b) freopen(b,"r",stdin)
#define fro(b) freopen(b,"w",stdout)
/*
ID: uslusam1
TASK: test
LANG: C++
*/
 
 
using namespace std;

set<int> st[1000013];
int arr[1000013];
int ans;
set<int> :: iterator it1,it2;


int main(){
	//fri("gir.txt");
	//fro("cik.txt");
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>arr[i];
		st[arr[i]].insert(i);
	}
	for(int i=1;i<=n;i++){
		if(st[arr[i]].count(i)==0){
			continue;
		}
		else{
			ans++;
			int pos=i;
			it1=st[arr[i]].find(i);
			int ctr=arr[i];
			while(pos>0){
				st[ctr].erase(it1);
				it1=st[arr[pos]-1].lower_bound(pos);
				if(it1==st[arr[pos]-1].end()){
					break;
				}
				else{
					ctr=arr[pos]-1;
					pos=*it1;
				}
			}
		}
	}
	cout<<ans<<endl;

	return 0;
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 47352 KB Output is correct
2 Correct 46 ms 47352 KB Output is correct
3 Correct 46 ms 47480 KB Output is correct
4 Correct 46 ms 47580 KB Output is correct
5 Correct 977 ms 91304 KB Output is correct
6 Correct 1202 ms 96060 KB Output is correct
7 Correct 921 ms 87544 KB Output is correct
8 Correct 885 ms 86876 KB Output is correct
9 Correct 1006 ms 89488 KB Output is correct
10 Correct 1072 ms 90752 KB Output is correct