oj.uz

Submission #81809

# Submission time Handle Problem Language Result Execution time Memory
81809 2018-10-27T00:58:53 Z mra2322001 Schools (IZhO13_school) C++14
95 / 100
 173 ms 9668 KB 
#include <bits/stdc++.h>
#define f0(i, n) for(int i(0); i < (n); i++)
#define f1(i, n) for(int i(1); i <= n; i++)

using namespace std;
typedef long long ll;
const ll N = 300002;

int n, m, s, a[N], b[N], id[N];
ll ans1[N], ans2[N];

int main(){
    ios_base::sync_with_stdio(0);

    cin >> n >> m >> s;
    f1(i, n){
        cin >> a[i] >> b[i];
        id[i] = i;
    }
    sort(id + 1, id + n + 1, [&](ll a1, ll a2){
         return a[a1] - b[a1] > a[a2] - b[a2];
    });
    priority_queue <int, vector <int>, greater <int> > q;
    f1(i, n){
        if(q.size() < m){
            ans1[i] = ans1[i - 1] + a[id[i]];
            q.push(a[id[i]]);
        }
        else{
            int x = q.top();
            q.pop();
            q.push(a[id[i]]);
            ans1[i] = ans1[i - 1] - x + a[id[i]];
        }
    }
    while(q.size()) q.pop();
    for(ll i = n; i >= 1; i--){
        if(q.size() < s){
            ans2[i] = ans2[i + 1] + b[id[i]];
            q.push(b[id[i]]);
        }
        else{
            int x = q.top();
            q.pop();
            q.push(b[id[i]]);
            ans2[i] = ans2[i + 1] - x + b[id[i]];
        }
    }
    f1(i, n) ans1[i] = max(ans1[i], ans1[i - 1]);
    for(ll i = n; i >= 1; i--) ans2[i] = max(ans2[i + 1], ans2[i]);
    ll res = LLONG_MIN;
    f1(i, n){
        if(i >= m && n - i >= s) res = max(res, ans1[i] + ans2[i +1]);
    }
    cout << res;
}

Compilation message

school.cpp: In function 'int main()':
school.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(q.size() < m){
            ~~~~~~~~~^~~
school.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(q.size() < s){
            ~~~~~~~~~^~~

Subtask #1
95.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Runtime error 5 ms 764 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Correct 2 ms 764 KB Output is correct
4 Correct 2 ms 876 KB Output is correct
5 Correct 2 ms 932 KB Output is correct
6 Correct 2 ms 932 KB Output is correct
7 Correct 4 ms 952 KB Output is correct
8 Correct 4 ms 952 KB Output is correct
9 Correct 4 ms 952 KB Output is correct
10 Correct 5 ms 992 KB Output is correct
11 Correct 4 ms 992 KB Output is correct
12 Correct 4 ms 992 KB Output is correct
13 Correct 22 ms 2016 KB Output is correct
14 Correct 43 ms 3172 KB Output is correct
15 Correct 82 ms 5344 KB Output is correct
16 Correct 94 ms 6512 KB Output is correct
17 Correct 130 ms 7476 KB Output is correct
18 Correct 147 ms 8048 KB Output is correct
19 Correct 151 ms 8564 KB Output is correct
20 Correct 173 ms 9668 KB Output is correct