oj.uz

Submission #446001

# Submission time Handle Problem Language Result Execution time Memory
446001 2021-07-20T12:06:55 Z Aryan_Raina Schools (IZhO13_school) C++17
95 / 100
 148 ms 12364 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define int int64_t
#define ld long double
#define ar array
#define all(a) a.begin(), a.end()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int INF = 1e15;
const int MOD = 1e9+7;

void solve() {
    int N, M, S; cin >> N >> M >> S;
    vector<ar<int,2>> shit(N);
    for (ar<int,2> &i : shit) cin >> i[0] >> i[1];

    sort(shit.begin(), shit.end(), [&](ar<int,2> x, ar<int,2> y) {
        return x[0] - x[1] > y[0] - y[1];
    });

    vector<int> ansA(N,0), ansB(N,0);

    priority_queue<int> pq;
    pq.push(-(ansA[0] = shit[0][0]));
    if (pq.size() > M) {
        ansA[0] += pq.top(); pq.pop();
    }
    for (int i = 1; i < N; i++) {
        ansA[i] = ansA[i-1] + shit[i][0];
        pq.push(-shit[i][0]);
        if (pq.size() > M) {
            ansA[i] += pq.top(); pq.pop();
        }
    }

    priority_queue<int>().swap(pq);
    pq.push(-(ansB[N-1] = shit[N-1][1]));
    if (pq.size() > S) {
        ansB[0] += pq.top(); pq.pop();
    }
    for (int i = N-2; i >= 0; i--) {
        ansB[i] = ansB[i+1] + shit[i][1];
        pq.push(-shit[i][1]);
        if (pq.size() > S) {
            ansB[i] += pq.top(); pq.pop();
        }
    }

    int ans = max(ansB[0], ansA[N-1]);
    for (int i = 0; i < N-1; i++)
        ans = max(ans, ansA[i] + ansB[i+1]);

    cout << ans << '\n';
} 
 
int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0); 
 
    int t = 1; //cin >> t;
    while (t--) solve();   
}

Compilation message

school.cpp: In function 'void solve()':
school.cpp:26:19: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   26 |     if (pq.size() > M) {
      |         ~~~~~~~~~~^~~
school.cpp:32:23: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   32 |         if (pq.size() > M) {
      |             ~~~~~~~~~~^~~
school.cpp:39:19: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   39 |     if (pq.size() > S) {
      |         ~~~~~~~~~~^~~
school.cpp:45:23: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int64_t' {aka 'long int'} [-Wsign-compare]
   45 |         if (pq.size() > S) {
      |             ~~~~~~~~~~^~~

Subtask #1
95.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Incorrect 0 ms 204 KB Output isn't correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 3 ms 460 KB Output is correct
8 Correct 2 ms 588 KB Output is correct
9 Correct 2 ms 460 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 2 ms 460 KB Output is correct
12 Correct 2 ms 588 KB Output is correct
13 Correct 14 ms 2244 KB Output is correct
14 Correct 33 ms 3736 KB Output is correct
15 Correct 64 ms 6056 KB Output is correct
16 Correct 74 ms 8708 KB Output is correct
17 Correct 91 ms 9652 KB Output is correct
18 Correct 102 ms 10204 KB Output is correct
19 Correct 108 ms 10884 KB Output is correct
20 Correct 148 ms 12364 KB Output is correct