Submission #381380

#	Time	Username	Problem	Language	Result	Execution time	Memory
381380		NONAME	Pastiri (COI20_pastiri)	C++17	8 / 100	178 ms	4200 KiB

pastiri

#include <bits/stdc++.h>
using namespace std;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, const T b) {a = min(a, b); return (a == b);}
template <typename T> inline bool chmax(T& a, const T b) {a = max(a, b); return (a == b);}

const int man = (int)(5e5 + 500);

int n, m;
int a[man];
vector <int> vc;

inline void cls() {
    vc.clear();
}

void solve() {
    cls();

    cin >> n >> m;
    for (int i = 0; i < (n - 1); ++i) {
        int x, y;
        cin >> x >> y;
        assert(abs(x - y) == 1);
    }
    for (int i = 0; i < m; ++i) {
        cin >> a[i];
    }
    sort(a, a + m);

    for (int i = 0; i < m; ++i) {
        if (i == (m - 1)) {
            vc.push_back(a[i]);
        } else {
            int md = (a[i] + a[i + 1]) >> 1;
            vc.push_back(md);
            if (abs(a[i] - md) == abs(a[i + 1] - md)) {
                ++i;
            }
        }
    }

    cout << (int)(vc.size()) << "\n";
    for (auto& i : vc) {
        cout << i << " ";
    }
    cout << "\n";
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int t = 1;
    #ifdef _LOCAL
        system("color a");
        freopen("in.txt", "r", stdin);
        cin >> t;
    #endif

    for (int i = 1; i <= t; ++i) {
        cerr << "Case #" << i << ": \n";
        solve();
        cerr << "\n";
    }

    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 18
• Subtask 3: 0 / 23
• Subtask 4: 0 / 51