oj.uz

Submission #47526

# Submission time Handle Problem Language Result Execution time Memory
47526 2018-05-05T02:26:40 Z aome Schools (IZhO13_school) C++17
100 / 100
 191 ms 9476 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 300005;

int n, m, q, a[N], b[N], p[N];
long long f[N], g[N], s, res;

bool cmp(int x, int y) {
    return a[x] - b[x] < a[y] - b[y];
}

int main() {
    ios::sync_with_stdio(false);
    cin >> n >> m >> q;
    for (int i = 0; i < n; ++i) cin >> a[i] >> b[i];
    for (int i = 0; i < n; ++i) p[i] = i;
    sort(p, p + n, cmp);
    priority_queue<int> pq;
    s = 0;
    for (int i = 0; i < n; ++i) {
        pq.push(-b[p[i]]); s += b[p[i]];
        if (pq.size() > q) {
            s += pq.top(); pq.pop();
        }
        f[i] = s;
    }
    while (pq.size()) pq.pop();
    s = 0;
    for (int i = n - 1; i >= 0; --i) {
        pq.push(-a[p[i]]); s += a[p[i]];
        if (pq.size() > m) {
            s += pq.top(); pq.pop();
        }
        g[i] = s;
    }
    for (int i = q - 1; i < n - m; ++i) res = max(res, f[i] + g[i + 1]);
    cout << res;
}

Compilation message

school.cpp: In function 'int main()':
school.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (pq.size() > q) {
             ~~~~~~~~~~^~~
school.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (pq.size() > m) {
             ~~~~~~~~~~^~~

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 484 KB Output is correct
3 Correct 2 ms 484 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 520 KB Output is correct
6 Correct 2 ms 600 KB Output is correct
7 Correct 4 ms 868 KB Output is correct
8 Correct 3 ms 868 KB Output is correct
9 Correct 4 ms 868 KB Output is correct
10 Correct 4 ms 868 KB Output is correct
11 Correct 4 ms 868 KB Output is correct
12 Correct 4 ms 868 KB Output is correct
13 Correct 19 ms 1788 KB Output is correct
14 Correct 46 ms 2940 KB Output is correct
15 Correct 82 ms 4988 KB Output is correct
16 Correct 143 ms 6392 KB Output is correct
17 Correct 130 ms 7100 KB Output is correct
18 Correct 142 ms 7800 KB Output is correct
19 Correct 148 ms 8312 KB Output is correct
20 Correct 191 ms 9476 KB Output is correct