oj.uz

Submission #638571

# Submission time Handle Problem Language Result Execution time Memory
638571 2022-09-06T12:06:06 Z morasha3 Alternating Heights (CCO22_day1problem1) C++17
6 / 25
 1000 ms 4432 KB 
#include <bits/stdc++.h>
using namespace std;
typedef int ll;
typedef   double ld;
const ll mod=1e9+7;
#define endl '\n'
ll n,k,q,arr[3007],vis[3007],s[3007];
vector<vector<ll>>v(3007);
bool f=0;
void dfs(vector<vector<int>>& v)
{
    int n = v.size();
    vector<int> deg(n);
    for (int a = 0; a < n; a++)
        for (int b : v[a])
            deg[b]++;

    vector<int> q;
    q.reserve(n);
    for (int i = 0; i < n; i++)
        if (deg[i] == 0)
            q.push_back(i);
    for (int rep = 0; rep < q.size(); rep++)
    {
        int c = q[rep];
        for (auto nxt : v[c])
        {
            deg[nxt]--;
            if (deg[nxt] == 0)
                q.push_back(nxt);
        }
    }
    if(n>q.size())
        f=1;
}


int32_t main()
{
    //freopen("jumping.in","r",stdin);
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>k>>q;
    for(int i=0; i<n; i++)
        cin>>arr[i];
    ll m[n];
    for(int i=0; i<n; i++)
        m[i]=i;
    for(int h=0; h<2; h++)
    {
        for(int i=h; i<n; i+=2)
        {
            ll r=i+1,c=0;
            while(r<n)
            {
                vector<vector<ll>>adj(k);
                for(int j=i; j<r; j++)
                {
                    if (j % 2 == i % 2)
                        adj[arr[j]-1].push_back(arr[j + 1]-1);
                    else
                        adj[arr[j + 1]-1].push_back(arr[j]-1);
                }
                f=0;
                dfs(adj);
                if(f)
                    break;
                r++;
            }
            m[i]=r-1;
        }
    }
    while(q--)
    {
        ll a,b;
        cin>>a>>b;
        a--,b--;
        if(m[a]>=b)
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
    }

    return 0;

}

Compilation message

Main.cpp: In function 'void dfs(std::vector<std::vector<int> >&)':
Main.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int rep = 0; rep < q.size(); rep++)
      |                       ~~~~^~~~~~~~~~
Main.cpp:33:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     if(n>q.size())
      |        ~^~~~~~~~~
Main.cpp: In function 'int32_t main()':
Main.cpp:55:22: warning: unused variable 'c' [-Wunused-variable]
   55 |             ll r=i+1,c=0;
      |                      ^

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 3428 KB Output is correct
2 Correct 166 ms 3404 KB Output is correct
3 Correct 169 ms 3332 KB Output is correct
4 Correct 130 ms 3296 KB Output is correct
5 Correct 150 ms 3560 KB Output is correct
6 Correct 171 ms 3328 KB Output is correct
7 Correct 187 ms 3504 KB Output is correct
8 Correct 194 ms 3352 KB Output is correct
9 Correct 736 ms 3512 KB Output is correct
10 Execution timed out 1089 ms 340 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 3464 KB Output is correct
2 Correct 161 ms 3364 KB Output is correct
3 Correct 157 ms 3408 KB Output is correct
4 Correct 133 ms 4328 KB Output is correct
5 Correct 145 ms 3544 KB Output is correct
6 Correct 158 ms 3396 KB Output is correct
7 Correct 190 ms 3412 KB Output is correct
8 Correct 158 ms 3488 KB Output is correct
9 Correct 209 ms 3840 KB Output is correct
10 Correct 462 ms 4368 KB Output is correct
11 Correct 441 ms 4432 KB Output is correct
12 Correct 0 ms 340 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Execution timed out 1078 ms 512 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 172 ms 3428 KB Output is correct
2 Correct 166 ms 3404 KB Output is correct
3 Correct 169 ms 3332 KB Output is correct
4 Correct 130 ms 3296 KB Output is correct
5 Correct 150 ms 3560 KB Output is correct
6 Correct 171 ms 3328 KB Output is correct
7 Correct 187 ms 3504 KB Output is correct
8 Correct 194 ms 3352 KB Output is correct
9 Correct 736 ms 3512 KB Output is correct
10 Execution timed out 1089 ms 340 KB Time limit exceeded
11 Halted 0 ms 0 KB -