제출 #671813

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
671813		ReLice	Money (IZhO17_money)	C++17	100 / 100	1002 ms	55236 KiB

money

#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define ll long long
#define ld long double
#define int long long
#define pb push_back
#define sz size()
#define fr first
#define sc second
//#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
void start(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
const int N=1e6+5;
const int mod=1e9+7;
const int inf=1e7;
void solve(){
    ll n,i,mx=-1,l,r,k,ans=1,lst;
    cin>>n;
	vector <ll> v(n);
	multiset <ll> ms;
	for(i=0;i<n;i++) cin>>v[i];
	lst=v[0];
	ms.insert(v[0]);
	auto it=ms.end();
	for(i=1;i<n;i++){
        auto it1=ms.lower_bound(v[i]);
        auto it2=ms.upper_bound(v[i]);
        if(v[i]<lst || (it1!=it && it2!=it)){
            ans++;
            it=it2;
        }
        ms.insert(v[i]);
        lst=v[i];
	}
	cout<<ans<<endl;
}
signed main(){
    //fre("divide");
    start();
    ll t=1;
    //cin>>t;
    while(t--) solve();
}

컴파일 시 표준 에러 (stderr) 메시지

money.cpp: In function 'void solve()':
money.cpp:22:12: warning: unused variable 'mx' [-Wunused-variable]
   22 |     ll n,i,mx=-1,l,r,k,ans=1,lst;
      |            ^~
money.cpp:22:18: warning: unused variable 'l' [-Wunused-variable]
   22 |     ll n,i,mx=-1,l,r,k,ans=1,lst;
      |                  ^
money.cpp:22:20: warning: unused variable 'r' [-Wunused-variable]
   22 |     ll n,i,mx=-1,l,r,k,ans=1,lst;
      |                    ^
money.cpp:22:22: warning: unused variable 'k' [-Wunused-variable]
   22 |     ll n,i,mx=-1,l,r,k,ans=1,lst;
      |                      ^
money.cpp: In function 'void fre(std::string)':
money.cpp:12:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
money.cpp:12:64: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | void fre(string s){freopen((s+".in").c_str(),"r",stdin);freopen((s+".out").c_str(),"w",stdout);}
      |                                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55