Submission #891838

#	Time	Username	Problem	Language	Result	Execution time	Memory
891838		CDuong	Arcade (NOI20_arcade)	C++17	0 / 100	0 ms	348 KiB

Arcade

/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/

#include <bits/stdc++.h>
#define taskname ""
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define i64 long long
#define pb push_back
#define ff first
#define ss second
#define isz(x) (int)x.size()
using namespace std;

const int mxN = 5e5 + 5;
const int mod = 1e9 + 7;
const i64 oo = 1e18;

int n, m;
vector<pair<int, int>> v;

void solve() {
    cin >> n >> m;
    v.resize(m + 1);
    for (int i = 1; i <= m; ++i) cin >> v[i].ff;
    for (int i = 1; i <= m; ++i) cin >> v[i].ss;
    sort(v.begin() + 1, v.end());

    int cnt = 1;
    set<pair<int, int>> s;
    for (int i = 1; i <= m; ++i) {
        auto it = s.lower_bound({v[i].ss, v[i].ff});
        bool woo = true;
        if (it != s.end()) {
            woo &= abs(it->ff - v[i].ss) >= abs(it->ss - v[i].ff);
        }
        if (it != s.begin()) {
            it = prev(it);
            woo &= abs(it->ff - v[i].ss) >= abs(it->ss - v[i].ff);
        }
        if (!woo) {
            ++cnt;
            s.clear();
        }
        s.insert({v[i].ss, v[i].ff});
    }
    cout << cnt << endl;
}

signed main() {

#ifndef CDuongg
    if(fopen(taskname".inp", "r"))
        assert(freopen(taskname".inp", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
    freopen("bai3.inp", "r", stdin);
    freopen("bai3.out", "w", stdout);
    auto start = chrono::high_resolution_clock::now();
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; //cin >> t;
    while(t--) solve();

#ifdef CDuongg
   auto end = chrono::high_resolution_clock::now();
   cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
   cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
   cout << "Check array size pls sir" << endl;
#endif

}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 14
• Subtask 6: 0 / 20
• Subtask 7: 0 / 15