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Submission #16936

# Submission time Handle Problem Language Result Execution time Memory
16936 2015-10-27T18:07:27 Z erdemkiraz Schools (IZhO13_school) C++
95 / 100
 346 ms 18060 KB 
#include <bits/stdc++.h>

using namespace std;

#define type(x) __typeof((x).begin())
#define foreach(it, x) for(type(x) it = (x).begin(); it != (x).end(); it++)

typedef long long ll;
typedef pair < int, int > ii;

const int inf = 1e9 + 333;
const ll linf = 1e18 + inf;

const int N = 3e5 + 5;

int n, m, s;
ii a[N];

int main() {

    scanf("%d %d %d", &n, &m, &s);

    for(int i = 1; i <= n; i++) {
        scanf("%d %d", &a[i].second, &a[i].first);
    }

    sort(a + 1, a + n + 1);
    reverse(a + 1, a + n + 1);

    for(int i = 1; i <= n; i++)
        swap(a[i].first, a[i].second);

    ll sum = 0, add = 0, ans = 0;

    set < ii > s1, s2;

    for(int i = 1; i < s; i++) {
        sum += a[i].second;
        s1.insert(ii(a[i].first - a[i].second, i));
    }

    for(int i = s; i <= n; i++) {
        s2.insert(ii(a[i].first, i));
    }

    while(s2.size() > m + 1) {
        s2.erase(*s2.begin());
    }

    foreach(it, s2) {
        add += it -> first;
    }

    for(int i = s; ; i++) {
        if(!s2.size())
            break;
        if(s2.find(ii(a[i].first, i)) == s2.end()) {
            add -= s2.begin() -> first;
            s2.erase(s2.begin());
        }
        else {
            add -= a[i].first;
            s2.erase(ii(a[i].first, i));
        }
        ll res = sum + add + a[i].second;
        ans = max(ans, res);
        ii best = s1.size() ? *s1.rbegin() : ii(0, 0);
        if(!s1.size() or a[i].first > a[i].second + best.first) {
            sum += a[i].first;
        }
        else {
            sum += a[i].second + best.first;
            s1.erase(*s1.rbegin());
            s1.insert(ii(a[i].first - a[i].second, i));
        }
    }

    printf("%lld\n", ans);

    return 0;

}

Subtask #1
95.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4068 KB Output is correct
2 Incorrect 1 ms 4068 KB Output isn't correct
3 Correct 0 ms 4068 KB Output is correct
4 Correct 0 ms 4068 KB Output is correct
5 Correct 0 ms 4068 KB Output is correct
6 Correct 0 ms 4068 KB Output is correct
7 Correct 2 ms 4200 KB Output is correct
8 Correct 4 ms 4200 KB Output is correct
9 Correct 2 ms 4200 KB Output is correct
10 Correct 0 ms 4200 KB Output is correct
11 Correct 2 ms 4200 KB Output is correct
12 Correct 5 ms 4200 KB Output is correct
13 Correct 40 ms 5652 KB Output is correct
14 Correct 62 ms 7632 KB Output is correct
15 Correct 152 ms 11460 KB Output is correct
16 Correct 191 ms 12384 KB Output is correct
17 Correct 241 ms 14232 KB Output is correct
18 Correct 264 ms 15288 KB Output is correct
19 Correct 302 ms 16212 KB Output is correct
20 Correct 346 ms 18060 KB Output is correct