Submission #797871

#	Time	Username	Problem	Language	Result	Execution time	Memory
797871		1bin	Advertisement 2 (JOI23_ho_t2)	C++14	10 / 100	130 ms	19100 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define all(v) v.begin(), v.end()
typedef long long ll;
const int NMAX = 5e5 + 5;
int n, x, y, L[NMAX], ans;
vector<pair<int, int>> v;
stack<pair<int, int>> st;

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    
    cin >> n;
    for(int i = 0; i < n; i++) cin >> x >> y, v.emplace_back(x, y);
    sort(all(v));
    for(int i = 0; i < n; i++){
        auto&[x, y] = v[i];
        while(st.size() && y - st.top().second >= x - st.top().first) st.pop();
        st.emplace(x, y);
        L[i] = st.size();
    }
    while(st.size()) st.pop();
    ans = 1e9;
    for(int i = n - 1; i >= 0; i--){
        auto&[x, y] = v[i];
        while(st.size() && y - st.top().second >= st.top().first - x) st.pop();
        st.emplace(x, y);
        ans = min(ans, L[i] + (int) st.size() - 1);
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:19:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   19 |         auto&[x, y] = v[i];
      |              ^
Main.cpp:27:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   27 |         auto&[x, y] = v[i];
      |              ^

• Subtask 1: 10 / 10
• Subtask 2: 0 / 23
• Subtask 3: 0 / 36
• Subtask 4: 0 / 31