Submission #898106

#	Time	Username	Problem	Language	Result	Execution time	Memory
898106		vjudge1	Passport (JOI23_passport)	C++17	0 / 100	0 ms	348 KiB

passport

#pragma GCC optimize("unroll-loops")
#pragma gcc optimize("Ofast")
#pragma GCC optimization("Ofast")
#pragma optimize(Ofast)
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define str string
#define fastio ios::sync_with_stdio(0), cin.tie(0);
#define fs first
#define ss second
#define endl '\n'
#define all(x) (x).begin(), (x).end()
#define len(x) x.size()

#define print(a)          \
    for (auto &x : a)     \
        cout << x << " "; \
    cout << endl;

#define printmp(a)    \
    for (auto &x : a) \
        cout << x.fs << " " << x.ss << endl;

const int mod = 998244353;

void solve(){
    int n;
    cin >> n;
    vector<pair<int, int>> a(n);
    for(int i = 0; i < n; i ++)
        cin >> a[i].fs >> a[i].ss, a[i].fs --, a[i].ss --;
    int q;
    cin >> q;
    for(int i = 0; i < q; i ++){
        int x;
        cin >> x;
        vector<int> k(n, 1e9);
        k[x - 1] = 0;
        int l = x - 1, r = x - 1;
        while(l >= 0 or r < n){
            if(r == n or (l >= 0 and k[l] <= k[r])){
                for(int j = a[l].fs; j <= a[l].ss; j ++)
                    k[j] = k[l] + 1;
                l --;
            }
            else{
                for(int j = a[r].fs; j <= a[r].ss; j ++)
                    k[j] = k[r] + 1;
                r ++;
            }
        }
        if(l == 0 and r == n)
            cout << *max_element(all(k)) << endl;
        else
            cout << -1 << endl;
    }
}

signed main()
{
    fastio int t = 1;
//    cin >> t;
    while (t--)
    {
        solve();
        cout << endl;
    }
}

Compilation message (stderr)

passport.cpp:2: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas]
    2 | #pragma gcc optimize("Ofast")
      | 
passport.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization("Ofast")
      | 
passport.cpp:4: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    4 | #pragma optimize(Ofast)
      |

• Subtask 1: 0 / 6
• Subtask 2: 0 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 8
• Subtask 5: 0 / 46