Submission #173269

#	Time	Username	Problem	Language	Result	Execution time	Memory
173269		DeD_TihoN	Money (IZhO17_money)	C++14	0 / 100	2 ms	376 KiB

money

#pragma GCC optimize ("O3")
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ll long long
#define ld long double
#define all(a) a.begin(),a.end()
#define ull unsigned long long
#define endl '\n'
#define y1 yaumru
#define ios ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define iter vector<int>::iterator
#define int long long
using namespace std;
using namespace __gnu_pbds;

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

template<class T>
using ordered_multiset=tree<T,null_type,less_equal<T>,rb_tree_tag,tree_order_statistics_node_update>;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rnd1(chrono::steady_clock::now().time_since_epoch().count());

//find_by_order
//order_of_key

const int N=1e6+7;
const int inf=1e9+1e9;
const int mod=1e9+7;
const ld eps=1e-9;

int a[N];
vector< pair<int,int> >b;

bool check(int x,int y)
{
    for (int i=0;i<b.size();++i){
        int l=b[i].ff;
        int r=b[i].ss;
        int kol=0;
        if (x<=l && l<=y){
            ++kol;
        }
        if (x<=r && r<=y){
            ++kol;
        }
        if (kol==1)return false;
    }
    return true;
}

main ()
{
    ios;
    int n;
    cin>>n;
    for (int i=1;i<=n;++i){
        cin>>a[i];
    }
    int ans=0;
    for (int i=1;i<=n;++i){
        int r=i+1;
        while(r<=n && a[r]>a[r-1] && check(a[r-1],a[r])){
            ++r;
        }
        for (int j=i;j<r-1;++j){
            b.pb({a[j],a[j+1]});
        }
        ++ans;
        i=r-1;
    }
    cout<<ans<<endl;
}

Compilation message (stderr)

money.cpp: In function 'bool check(long long int, long long int)':
money.cpp:43:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<b.size();++i){
                  ~^~~~~~~~~
money.cpp: At global scope:
money.cpp:58:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main ()
       ^

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55