Submission #341708

# Submission time Handle Problem Language Result Execution time Memory
341708 2020-12-30T13:57:47 Z IZhO_2021_I_want_Silver Schools (IZhO13_school) C++14
10 / 100
910 ms 61972 KB
#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
#include <set>
#include <map>
#include <iomanip>
#include <cassert>
#include <stack>
#include <queue>
#include <deque>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>-

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;
#define int ll
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

// template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//  order_of_key (k) : Number of items strictly smaller than k .
//  find_by_order(k) : K-th element in a set (counting from zero).
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define pb push_back
#define ppb pop_back
#define mkp make_pair
#define F first
#define S second
#define lb lower_bound
#define ub upper_bound
#define show(a) cerr << #a <<" -> "<< a <<" "
#define nl cerr <<"\n"

const int N = 3e5 + 5;
const int oo = 1e9 + 5;

int n, m, s, a[2][N], cur[2];
vector < pair <int, pii> > vec;
multiset <pii> other[2], q[2];
bool used[N];

void add(int typ, int ind) {
    int val = a[typ][ind];
    --cur[typ];
    q[typ].insert({val, ind});
    used[ind] = 1;
    other[typ].erase(other[typ].find({val, ind}));
}

void del(int typ, int ind) {
    int val = a[typ][ind];
    ++cur[typ];
    q[typ].erase(q[typ].find({val, ind}));
    used[ind] = 0;
    other[typ].insert({val, ind});
}

void solve() {
    cin >> n >> m >> s;
    for (int i = 1; i <= n; ++i) {
        cin >> a[0][i] >> a[1][i];

        vec.pb({a[0][i], {0, i}});
        vec.pb({a[1][i], {1, i}});

        other[0].insert({a[0][i], i});
        other[1].insert({a[1][i], i});
    }
    sort(all(vec));
    cur[0] = m, cur[1] = s;
    int sum = 0;
    for (int i = sz(vec)-1; i >= 0; --i) {
        int val = vec[i].F,
            typ = vec[i].S.F,
            ind = vec[i].S.S;
        int before_sum = sum;

        bool del_q = 0;
        if (!cur[typ]) { //show(q[typ].begin() -> F);
            if (sz(q[typ])) { sum -= q[typ].begin() -> F; del_q = 1; }
            else { continue; }
        }
        bool del_ind = 0, got_other = 0;
        if (used[ind]) { //show(a[(typ^1)][ind]);
            sum -= a[(typ^1)][ind]; del_ind = 1;
            if (sz(other[(typ^1)])) { sum += other[(typ^1)].rbegin() -> F; got_other = 1; }
        }
        sum += val; //show(sum);

        if (sum > before_sum) {
            add(typ, ind);
            if (del_q) { del(typ, q[typ].begin() -> S); }
            if (del_ind) { del(typ^1, ind); }
            if (got_other) { add(typ^1, other[(typ^1)].rbegin() -> S); }
        }
        else {
            sum = before_sum;
            other[typ].erase(other[typ].find({val, ind}));
        } //nl;
    }
    cout << sum;
}

 main () {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int tests = 1;
	//cin >> tests;
	while (tests --) {
		solve();
	}
	return 0;
}
/*
    Just Chalish!
*/

Compilation message

school.cpp:108:8: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  108 |  main () {
      |        ^
# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Incorrect 1 ms 376 KB Output isn't correct
5 Incorrect 1 ms 364 KB Output isn't correct
6 Incorrect 1 ms 364 KB Output isn't correct
7 Incorrect 6 ms 1260 KB Output isn't correct
8 Incorrect 6 ms 1260 KB Output isn't correct
9 Incorrect 6 ms 1388 KB Output isn't correct
10 Incorrect 6 ms 1320 KB Output isn't correct
11 Incorrect 6 ms 1320 KB Output isn't correct
12 Incorrect 6 ms 1320 KB Output isn't correct
13 Incorrect 62 ms 8096 KB Output isn't correct
14 Incorrect 161 ms 15772 KB Output isn't correct
15 Incorrect 376 ms 31120 KB Output isn't correct
16 Incorrect 548 ms 34320 KB Output isn't correct
17 Incorrect 655 ms 41728 KB Output isn't correct
18 Incorrect 687 ms 45696 KB Output isn't correct
19 Incorrect 779 ms 49280 KB Output isn't correct
20 Incorrect 910 ms 61972 KB Output isn't correct