oj.uz

Submission #503380

# Submission time Handle Problem Language Result Execution time Memory
503380 2022-01-07T18:44:16 Z lukameladze Schools (IZhO13_school) C++14
100 / 100
 233 ms 19788 KB 
# include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define int long long
#define pii pair <int, int> 
using namespace std;
const int N = 3e5 + 5;
int n,m,k,a[N],b[N],sum,num,ans,pr[N],sf[N];
multiset <int> ms;
multiset <int> :: iterator it;
vector <pii> v;
main() {
    std::ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
    cin>>n>>m>>k;
    for (int i = 1; i <= n; i++) {
        cin>>a[i]>>b[i];
        v.pb({a[i] - b[i], i});
    }
    sort(v.begin(),v.end()); reverse(v.begin(),v.end());
    if (m) {
        for (int i = 0; i < v.size(); i++) {
            num = a[v[i].s];
            if (ms.size() < m) {
                ms.insert(num);
                sum += num;
            }
            else {
                it = ms.begin();
                if (*it < num) {
                    sum -= *it;
                    ms.erase(it); 
                    sum += num; ms.insert(num);
                }
            } pr[i] = sum;
        }
    }
    sum = 0;
    ms.clear();
    if (k) {
        for (int i = (int)v.size() - 1; i >= 0; i--) {
            num = b[v[i].s];
            
            if (ms.size() < k) {
                ms.insert(num); sum += num;
            } else {
                it = ms.begin();
                if (*it < num) {
                    sum -= *it;
                    ms.erase(it); sum += num; ms.insert(num);
                }
            }
            sf[i] = sum;
        }
    }
    if (m == 0) {
        cout<<sf[0]<<endl;
        return 0;
    }
    if (k == 0) {
        cout<<pr[n-1]<<endl; return 0;
    }
    for (int i = m - 1; i <= n - k - 1; i++) {
        ans = max(ans, pr[i] + sf[i + 1]);
    }
    cout<<ans<<endl;
}

Compilation message

school.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main() {
      | ^~~~
school.cpp: In function 'int main()':
school.cpp:22:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
school.cpp:24:27: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   24 |             if (ms.size() < m) {
      |                 ~~~~~~~~~~^~~
school.cpp:44:27: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   44 |             if (ms.size() < k) {
      |                 ~~~~~~~~~~^~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 3 ms 588 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 2 ms 716 KB Output is correct
10 Correct 2 ms 716 KB Output is correct
11 Correct 2 ms 716 KB Output is correct
12 Correct 2 ms 716 KB Output is correct
13 Correct 16 ms 3508 KB Output is correct
14 Correct 28 ms 4932 KB Output is correct
15 Correct 49 ms 7988 KB Output is correct
16 Correct 129 ms 16188 KB Output is correct
17 Correct 183 ms 15580 KB Output is correct
18 Correct 151 ms 15924 KB Output is correct
19 Correct 181 ms 17236 KB Output is correct
20 Correct 233 ms 19788 KB Output is correct