Submission #882714

#	Time	Username	Problem	Language	Result	Execution time	Memory
882714		tsumondai	Inspections (NOI23_inspections)	C++14	100 / 100	681 ms	49848 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, r, l) for(int i = r; i >= l; i--)
#define __TIME  (1.0 * clock() / CLOCKS_PER_SEC)

typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;

const int MAXN = 1e6 + 5;

const int oo = 1e9, mod = 1e9 + 7;

struct seg {
    int l;
    int r;
    int time;
    bool operator<(const seg &a)const {
        if (l == a.l) {
            return r < a.r;
        }
        return l < a.l;
    }
};
map<int, int> vals;
set<seg> in;
vector<seg> to_err, to_add;
void compare(seg &a, seg &b) {
    if (b.l < a.l) {
        seg c = {b.l, a.l - 1, b.time};
        to_add.push_back(c);
        b.time += a.l - b.l;
        b.l = a.l;
    }
    if (b.r > a.r) {
        seg c = {a.r + 1, b.r, b.time + a.r - b.l + 1};
        to_add.push_back(c);
        b.r = a.r;
    }
}

void process() {
    int N, Q, M;
    cin >> N >> M >> Q;
    vector<seg> arr(M);
    int day = 0;
    foru(i, 0, M - 1) {
        int a, b;
        cin >> a >> b;
        arr[i] = {a, b, day};
        day += b - a + 1;
    }
    seg tt = {INT_MIN, INT_MIN, INT_MIN};
    in.insert(tt);
    foru(i, 0, M - 1) {
        seg a = arr[i];
        seg t = {a.r, INT_MAX, 0};
        auto p = --in.upper_bound(t);
        while ((*p).r >= a.l) {
            seg b = *p;
            p--;
            to_err.push_back(b);
            compare(a, b);
            int lmax = max(a.l, b.l);
            int rmin = min(a.r, b.r);
            int td = b.l - a.l;
            vals[a.time + td - b.time - 1] += rmin - lmax + 1;
        }
        for (auto j : to_err) {
            in.erase(j);
        }
        to_err.clear();
        for (auto j : to_add) {
            in.insert(j);
        }
        to_add.clear();
        in.insert(a);
    }
    vector<pair<int, int>> pref;
    for (auto tmp : vals) {
        int l = tmp.fi, r = tmp.se;
        pref.push_back({l, r});
    }
    pref.push_back({(int)1e16, 0ll});
    for (int i = (int)pref.size() - 2; i > -1; i --) {
        pref[i].second += pref[i + 1].second;
    }
    for (int i = 0; i < Q; i ++) {
        int q;
        cin >> q;
        cout << (*lower_bound(pref.begin(), pref.end(), make_pair(q, 0ll))).second << " ";
    }
    cout << endl;
    return;
}

signed main() {
    cin.tie(0)->sync_with_stdio(false);
    //freopen(".inp", "r", stdin);
    //freopen(".out", "w", stdout);
    process();
    cerr << "Time elapsed: " << __TIME << " s.\n";
    return 0;
}

/*
Xét các trường hợp đặc biệt
Kiểm tra lại input/output
Cố gắng trâu
Lật ngược bài toán
Keep calm and get VOI
Flow:

*/

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 26 / 26
• Subtask 5: 23 / 23