Submission #974445

#	Time	Username	Problem	Language	Result	Execution time	Memory
974445		efedmrlr	New Home (APIO18_new_home)	C++17	12 / 100	1552 ms	40028 KiB

new_home

#include <bits/stdc++.h>

#define lli long long int
#define ld long double
#define pb push_back
#define MP make_pair
#define REP(i, n) for(int i = 0; (i) < (n); (i)++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

using namespace std;

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
}

const int N = 1e5 + 5;
const int INF = 1e9 + 500;
const int K = 405;
int n, k, q;
vector<array<int, 4> > ev;
vector<array<int, 3> > qu;
vector<multiset<int> > st(K);
void solve() {
    cin >> n >> k >> q;
    REP(i, n) {
        int x, t, a, b;
        cin >> x >> t >> a >> b;
        ev.pb({a, x, t, 1});
        ev.pb({b + 1, x, t, 0});
    }
    qu.resize(q);
    REP(i, q) {
        cin >> qu[i][1] >> qu[i][0];
        qu[i][2] = i;
    }
    sort(all(qu));
    sort(all(ev));
    int ind = 0;
    vector<int> res(q, 0);
    for(auto c : qu) { 
        while(ind < ev.size() && ev[ind][0] <= c[0]) {
            if(ev[ind][3]) {
                st[ev[ind][2]].insert(ev[ind][1]);
            }
            else {
                st[ev[ind][2]].erase(st[ev[ind][2]].lower_bound(ev[ind][1]));
            }
            ind++;
        }
        int mx = 0;
        for(int i = 1; i <= k; i++) {
            if(st[i].empty()) {
                mx = -1;
                break;
            }
            auto itr = st[i].lower_bound(c[1]);
            int mn = INF;
            if(itr != st[i].end()) mn = min(mn, (*itr) - c[1]);
            if(itr != st[i].begin()) {
                itr--;
                mn = min(mn, c[1] - (*itr));
            }
            mx = max(mx, mn);
        }
        res[c[2]] = mx;
    }
    REP(i, q) {
        cout << res[i] << "\n";
    }
}


signed main() {
    fastio();
    solve();
}

Compilation message (stderr)

new_home.cpp: In function 'void solve()':
new_home.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 4> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         while(ind < ev.size() && ev[ind][0] <= c[0]) {
      |               ~~~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20