oj.uz

Submission #246245

# Submission time Handle Problem Language Result Execution time Memory
246245 2020-07-08T12:31:11 Z aloo123 Schools (IZhO13_school) C++14
100 / 100
 129 ms 15084 KB 
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <ratio>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <climits>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/trie_policy.hpp>
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define in insert
#define vll vector<ll>
#define endl "\n"
#define pll pair<ll,ll>
#define f first
#define s second
#define int ll
#define sz(x) (ll)x.size()
#define all(x) (x.begin(),x.end())
using namespace std;
// using namespace __gnu_pbds;
// typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> os;
 
 
const ll INF = 1e12;
const ll N =(1e7+5); // TODO : change value as per problem
const ll MOD = 1e9+7;
ll a[N];
ll b[N];
ll pre[N];
ll suf[N];
pll v[N];
bool cmp(pll x,pll y){
	return ((x.f - x.s) > (y.f-y.s));
}

void solve(){
 	ll n,m,S;
 	cin >> n >> m >> S;
 	for(int i= 1;i<=n;i++){
 		cin >> a[i] >> b[i];
 		v[i].f = a[i];
 		v[i].s = b[i];
 	}
 	sort(v+1,v+n+1,cmp);
 	priority_queue<ll,vector<ll>,greater<ll>> pq;
 	ll sum = 0;
 	for(int i = 1;i<=m;i++){
 		pq.push(v[i].f);
 		sum += v[i].f;
 	}
 	pre[m] = sum;
 	for(int i= m+1;i<=n;i++){
 		ll add = v[i].f;
 		ll x = pq.top();
 		if(add > x){
 			sum -= x;
 			sum += add;
 			pq.pop();
 			pq.push(add);
 		}
 		pre[i] = sum;
 	}
 	while(!pq.empty())
 		pq.pop();
 	sum = 0;
 	ll dumb = -1;
 	for(int i = n,j =1;j<=S;j++,i--){
 		sum += v[i].s;
 		pq.push(v[i].s);
 		if(j == S){
 			suf[i] = sum;
 			dumb = i;
 		}
 	}
 	for(int i = dumb-1;i>=1;i--){
 		ll add = v[i].s;
 		ll x = pq.top();
 		if(add > x){
 			sum -= x;
 			sum += add;
 			pq.pop();
 			pq.push(add);
 		}
 		suf[i] = sum;
 	}
 	ll ans= 0;
 	for(int i =m;i<=n;i++){
 		if((n-i) >= S){
 			ans = max(ans,pre[i] + suf[i+1]);
 		}
 		else break;
 	}
 	cout << ans << endl;



}

signed main(){

    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    

 
     ll tt=1;   
     // cin >> tt;
    while(tt--){    
        solve();
    }    
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 6 ms 640 KB Output is correct
8 Correct 7 ms 640 KB Output is correct
9 Correct 7 ms 640 KB Output is correct
10 Correct 7 ms 768 KB Output is correct
11 Correct 6 ms 640 KB Output is correct
12 Correct 6 ms 640 KB Output is correct
13 Correct 21 ms 2560 KB Output is correct
14 Correct 35 ms 4992 KB Output is correct
15 Correct 68 ms 9208 KB Output is correct
16 Correct 76 ms 10736 KB Output is correct
17 Correct 101 ms 11376 KB Output is correct
18 Correct 110 ms 12528 KB Output is correct
19 Correct 112 ms 13340 KB Output is correct
20 Correct 129 ms 15084 KB Output is correct