Submission #132023

#	Time	Username	Problem	Language	Result	Execution time	Memory
132023		Vardanyan	Matching (CEOI11_mat)	C++14	36 / 100	2072 ms	21304 KiB

mat

#include <bits/stdc++.h>
using namespace std;

const int N = 1000*1000+5;
int a[N];
int b[N];
int pos[N];
int main(){
    ios_base::sync_with_stdio(false);
    int n,m;
    cin>>n>>m;
    for(int i = 1;i<=n;i++){
            cin>>a[i];
            pos[i] = a[i];
    }
    for(int i = 1;i<=m;i++) cin>>b[i];
    vector<int> ans;
    set<int> ms;
    for(int i = 1;i<=n;i++) ms.insert(b[i]);
    for(int i = 1;i<=m;i++){
        if(i+n-1>m) break;
        int nax = 0;
        bool f = true;
        if(*(ms.begin()) == b[pos[1]+i-1] && *(++ms.begin()) == b[pos[2]+i-1] && *(--ms.end()) == b[pos[n]+i-1]){
            set<int>::iterator it = ms.begin();
            for(int j = 1;j<=n;j++){
                int x = pos[j];
                if(b[x+i-1]<nax){
                    f = false;
                    break;
                }
                nax = b[x+i-1];
                if(*it!=nax) {
                    f = false;
                    break;
                }
                it++;
            }
        }
        else f = false;
        if(f) ans.push_back(i);
        ms.erase(ms.find(b[i]));
        ms.insert(b[i+n]);
    }
    cout<<ans.size()<<endl;
    for(int i = 0;i<ans.size();i++) cout<<ans[i]<<" ";
    cout<<endl;
    return 0;
}

Compilation message (stderr)

mat.cpp: In function 'int main()':
mat.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i<ans.size();i++) cout<<ans[i]<<" ";
                   ~^~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 9
• Subtask 8: 0 / 9
• Subtask 9: 0 / 8
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10