oj.uz

Submission #16934

# Submission time Handle Problem Language Result Execution time Memory
16934 2015-10-27T17:57:11 Z erdemkiraz Schools (IZhO13_school) C++
80 / 100
 337 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 + 1; 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);
        //printf("i = %d res = %lld ans = %lld\n", i, res, ans);
        //printf("sum = %d add = %d\n", sum, add);
        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
80.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4068 KB Output isn't correct
2 Correct 2 ms 4068 KB Output is correct
3 Incorrect 2 ms 4068 KB Output isn't 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 Incorrect 0 ms 4200 KB Output isn't correct
9 Correct 3 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 42 ms 5652 KB Output is correct
14 Correct 71 ms 7632 KB Output is correct
15 Correct 144 ms 11460 KB Output is correct
16 Incorrect 180 ms 12384 KB Output isn't correct
17 Correct 240 ms 14232 KB Output is correct
18 Correct 276 ms 15288 KB Output is correct
19 Correct 266 ms 16212 KB Output is correct
20 Correct 337 ms 18060 KB Output is correct