Submission #367340

#	Time	Username	Problem	Language	Result	Execution time	Memory
367340		lookcook	Exhibition (JOI19_ho_t2)	C++17	50 / 100	1096 ms	10596 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

#define int long long

using namespace std;

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    map<pair<int,int>,int> cnt;
    vector<int> frames;
    for (int i = 0; i < n; i++) {
        int s, v;
        cin >> s >> v;
        cnt[{s,v}]++;
    }
    for (int i = 0; i < m; i++) {
        int c;
        cin >> c;
        frames.push_back(c);
    }
    sort(frames.begin(),frames.end());
    reverse(frames.begin(),frames.end());
    int lstVal = 1e18;
    int res = 0;
    for (int i = 0; i < frames.size(); i++) {
        int c = frames[i];
        pair<int,int> best = {-1,-1};
        for (pair<pair<int,int>,int> pa : cnt) {
            if (pa.first.second <= lstVal && pa.first.first <= c) {
                if (pa.first.second>=best.second) best = pa.first;
            }
        }
        if (best.first != -1) {
            res++;
            lstVal = best.second;
            cnt[best]--;
            if (cnt[best] == 0) cnt.erase(best);
        }
    }
    cout << res << '\n';
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:28:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for (int i = 0; i < frames.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 0 / 50