Submission #932356

#	Time	Username	Problem	Language	Result	Execution time	Memory
932356		12345678	Martian DNA (BOI18_dna)	C++17	68 / 100	2028 ms	3204 KiB

dna

#include <bits/stdc++.h>

using namespace std;

const int nx=2e5+5;
int n, v[nx], k, r, res[nx], b, q, ans=INT_MAX;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>k>>r;
    for (int i=1; i<=n; i++) cin>>v[i], res[i]=INT_MAX;
    for (int i=1; i<=r; i++)
    {
        cin>>b>>q;
        deque<int> dq;
        for (int j=1; j<=n; j++) 
        {
            if (v[j]==b) dq.push_back(j);
            while (!dq.empty()&&dq.size()>q) dq.pop_front();
            if (dq.size()>=q) res[j]=min(res[j], dq.front());
            else res[j]=-1;
            //cout<<i<<' '<<j<<' '<<res[j]<<'\n';
        }
    }
    for (int i=1; i<=n; i++) ans=min(ans, res[i]!=-1?i-res[i]+1:INT_MAX);
    if (ans==INT_MAX) cout<<"impossible";
    else cout<<ans;
}

Compilation message (stderr)

dna.cpp: In function 'int main()':
dna.cpp:20:42: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |             while (!dq.empty()&&dq.size()>q) dq.pop_front();
      |                                 ~~~~~~~~~^~
dna.cpp:21:26: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   21 |             if (dq.size()>=q) res[j]=min(res[j], dq.front());
      |                 ~~~~~~~~~^~~

• Subtask 1: 16 / 16
• Subtask 2: 24 / 24
• Subtask 3: 28 / 28
• Subtask 4: 0 / 32