oj.uz

Submission #171744

# Submission time Handle Problem Language Result Execution time Memory
171744 2019-12-30T09:03:44 Z davitmarg Schools (IZhO13_school) C++17
100 / 100
 277 ms 18556 KB 
/*DavitMarg*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <fstream>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(), v.end()
using namespace std;

const int N = 300005;

int n, m, k;
LL ans, pr[N], sf[N];
pair<LL, LL> a[N];
multiset<LL> s;
int main()
{
    cin >> n >> m >> k;
    for (int i = 1; i <= n; i++)
        scanf("%lld%lld", &a[i].first, &a[i].second);
    sort(a + 1, a + 1 + n, [](pair<LL, LL> a, pair<LL, LL> b) {
        return a.first - a.second > b.first - b.second;
    });

    for (int i = 1; i <= n; i++)
    {
        pr[i] = pr[i - 1] + a[i].first;
        s.insert(a[i].first);
        if (s.size() > m)
        {
            pr[i] -= (*s.begin());
            s.erase(s.begin());
        }
    }
    s.clear();
    for (int i = n; i >= 1; i--)
    {
        sf[i] = sf[i + 1] + a[i].second;
        s.insert(a[i].second);
        if (s.size() > k)
        {
            sf[i] -= (*s.begin());
            s.erase(s.begin());
        }
    }

    for (int i = 1; i <= n; i++)
        ans = max(pr[i] + sf[i + 1], ans);
    cout << ans << endl;
    return 0;
}

/*
 
3 1 1
100 0
100 50
0 20
 
4 1 1
100 0
550 500
500 550
0 100
 
3 1 1
100 0
500 550
0 100
 
 
 
*/

Compilation message

school.cpp: In function 'int main()':
school.cpp:45:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (s.size() > m)
             ~~~~~~~~~^~~
school.cpp:56:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (s.size() > k)
             ~~~~~~~~~^~~
school.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld", &a[i].first, &a[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 4 ms 504 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 632 KB Output is correct
10 Correct 5 ms 692 KB Output is correct
11 Correct 5 ms 764 KB Output is correct
12 Correct 5 ms 732 KB Output is correct
13 Correct 30 ms 3320 KB Output is correct
14 Correct 50 ms 4600 KB Output is correct
15 Correct 77 ms 7288 KB Output is correct
16 Correct 185 ms 15328 KB Output is correct
17 Correct 214 ms 14704 KB Output is correct
18 Correct 220 ms 15144 KB Output is correct
19 Correct 241 ms 16068 KB Output is correct
20 Correct 277 ms 18556 KB Output is correct