oj.uz

Submission #888888

# Submission time Handle Problem Language Result Execution time Memory
888888 2023-12-18T10:39:34 Z Nurislam Passport (JOI23_passport) C++14
22 / 100
 2000 ms 205152 KB 
/*

author : abushbandit
contest : ---

*/

#include "bits/stdc++.h"

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds;

using namespace std;

#define int long long
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define ss second
#define pb push_back
#define rep(i,s,f) for(int i = s;i < f;i++)

#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>

#pragma GCC optimize("Ofast,no-stack-protector,fast-math",3)

template <class type1>
  using ordered_multiset = tree <type1, null_type, less_equal <type1>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<pair<int,int>> vii;
typedef pair<int,int> pii;

const ll INF = 1e18;
const ll MOD7 = 1e9 + 7;
const ll MOD9 = 998244353;
const ld PI = acos(-1.0);
const int N = 1e5 + 6;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
    
}

int binpow (int a, int n) {
  int res = 1;
  while (n) {
    if (n & 1)
      res *= a;
    a *= a;
    n >>= 1;
  }
  return res;
}

void start_file(string file){
  freopen((file + ".in").c_str(),"r",stdin);
  freopen((file + ".out").c_str(),"w",stdout);
}

void solve(int tc){
  
  int n;
  cin >> n;
  vector<pair<int,int>> a(n + 1);
  for(int i = 1;i <= n;i++){
    int l,r;
    cin >> l >> r;
    a[i] = {l,r};
  }
  
   
    int q;
  cin >> q;
  for(int i = 0;i < q;i++){
        int x;
        cin >> x;
        if(x == 1){
          
          int i = 1,lst = a[1].ss,cnt = 0;
          bool check = 0;
          while(true){
            cnt++;
            int mx = 0;
            while(i <= n && i <= lst){
              mx = max(mx,a[i].ss);
              i++;
        }
        if(i > n){
          break;
        } else if(lst < mx){
          lst = mx;
        } else{
          check = 1;
          break;
        }
      }
          
          if(check){
            cout << -1 << "\n";
      } else{
        cout << cnt << "\n";
      }
          
          break;
          
    } else{
      vector<vector<int>> dis(n + 1, vector<int> (n + 1,INF));
          vector<vector<int>> vis(n + 1, vector<int> (n + 1,0));
   
          set<vector<int>> st;
          dis[a[x].ff][a[x].ss] = 1;
           st.insert({1,a[x].ff,a[x].ss});
          while(!st.empty()){
              int l = (*st.begin())[1], r = (*st.begin())[2];
              st.erase(st.begin());
              if(vis[l][r])continue;
              vis[l][r] = 1;
              for(int i = l;i <= r;i++){
                  for(int j = r;j <= max(r,a[i].ss);j++){
                      for(int k = l;k >= min(l,a[i].ff);k--){
                          if(dis[l][r] + 1 < dis[k][j]){
                              st.insert({dis[l][r] + 1,k,j});
                              dis[k][j] = dis[l][r] + 1;
                          }
                      }
                  }
              }
          }
          if(dis[1][n] == INF){
            cout << "-1\n";
      } else{
        cout << dis[1][n] << "\n";
      }
    }
          
    }
  
}

signed main(){

//  start_file("");

  ios_base::sync_with_stdio(0);
  cin.tie(0);cout.tie(0);

  int test_cases = 1;
//  cin >> test_cases ;
  for(int tc = 1;tc <= test_cases;++ tc){
    solve(tc);
  }  

}

/*



*/

Compilation message

passport.cpp: In function 'void start_file(std::string)':
passport.cpp:75:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |   freopen((file + ".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
passport.cpp:76:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |   freopen((file + ".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 24 ms 3420 KB Output is correct
5 Correct 23 ms 3420 KB Output is correct
6 Correct 24 ms 3420 KB Output is correct
7 Correct 19 ms 3420 KB Output is correct
8 Correct 16 ms 2904 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 151 ms 2396 KB Output is correct
12 Correct 16 ms 1880 KB Output is correct
13 Correct 80 ms 1880 KB Output is correct
14 Correct 23 ms 2392 KB Output is correct
15 Correct 7 ms 1884 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 151 ms 2396 KB Output is correct
12 Correct 16 ms 1880 KB Output is correct
13 Correct 80 ms 1880 KB Output is correct
14 Correct 23 ms 2392 KB Output is correct
15 Correct 7 ms 1884 KB Output is correct
16 Execution timed out 2076 ms 205152 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 151 ms 2396 KB Output is correct
12 Correct 16 ms 1880 KB Output is correct
13 Correct 80 ms 1880 KB Output is correct
14 Correct 23 ms 2392 KB Output is correct
15 Correct 7 ms 1884 KB Output is correct
16 Execution timed out 2076 ms 205152 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 24 ms 3420 KB Output is correct
5 Correct 23 ms 3420 KB Output is correct
6 Correct 24 ms 3420 KB Output is correct
7 Correct 19 ms 3420 KB Output is correct
8 Correct 16 ms 2904 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 151 ms 2396 KB Output is correct
20 Correct 16 ms 1880 KB Output is correct
21 Correct 80 ms 1880 KB Output is correct
22 Correct 23 ms 2392 KB Output is correct
23 Correct 7 ms 1884 KB Output is correct
24 Execution timed out 2076 ms 205152 KB Time limit exceeded
25 Halted 0 ms 0 KB -