Submission #635754

#	Time	Username	Problem	Language	Result	Execution time	Memory
635754		kabika	Art Exhibition (JOI18_art)	C++14	100 / 100	670 ms	42472 KiB

art

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr ll MOD = 1e9 + 7;
#define pb push_back
#define pli pair<ll,int>
#define pr make_pair
#define ft first
#define sd second

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n;
	cin >> n;
	map<ll,ll> mp;
	for(int i = 0; i < n; ++i)
	{
	    ll a, b;
	    cin >> a >> b;
	    mp[a] += b;
	}
	
	int sz = static_cast<int>(mp.size());
	ll mn = mp.begin()->ft, mx = mp.begin()->ft;
	ll val = 0;
	vector<ll> dp(sz+1,0);
	int i = 1;
	for(auto it = mp.begin(); it != mp.end(); ++it, ++i)
	{
	    mx = it->ft;
	    val += it->sd;
	    ll tmp1 = val - (mx-mn);
	    if(tmp1 <= it->sd)
	    {
	        dp[i] = it->sd;
	        val = it->sd;
	        mn = mx = it->ft;
	        continue;
	    }
	    dp[i] = tmp1;
	}
	sort(dp.begin()+1,dp.end());
	cout << dp[sz] << '\n';
	return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50