제출 #708997

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
708997		vjudge1	Baloni (COCI15_baloni)	C++17	100 / 100	838 ms	95940 KiB

baloni

#include<bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;

#define int long long
#define ll long long
#define pb push_back
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define freopen(x) freopen(x".in","r",stdin);freopen(x".out","w",stdout);

const int N = 1e6 + 5;
const int M = 3e3 + 5;
const ll mod = 1e9 + 7;
const ll inf = 1e7;

int n, h[N], id, x, ans;
set<int> st[N];

main() {
	fast
	cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> h[i];
		st[h[i]].insert(i);
	}
	for(int i = 1000000; i >= 1; i--){
		while(st[i].size()){
			x = i;
			id = *st[i].begin();
			while(x && st[x].size()){
				if(st[x].lower_bound(id) == st[x].end()) break;
				id = *st[x].lower_bound(id);
				st[x].erase(id);
				x--;
			}
			ans++;
		}
	}
	cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

baloni.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization("O3")
      | 
baloni.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    4 | #pragma GCC optimization("unroll-loops")
      | 
baloni.cpp:5: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    5 | #pragma comment(linker, "/stack:200000000")
      | 
baloni.cpp:27:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main() {
      | ^~~~

• Subtask 1: 100 / 100