Submission #1078937

#	Time	Username	Problem	Language	Result	Execution time	Memory
1078937		Hanksburger	September (APIO24_september)	C++17	45 / 100	104 ms	10344 KiB

september

#include "september.h"
#include <bits/stdc++.h>
using namespace std;
int deg[100005];
set<int> s;
int solve(int n, int m, vector<int> p, vector<vector<int> > a)
{
    for (int i=0; i<n; i++)
        deg[i]=0;
    for (int i=1; i<n; i++)
        deg[p[i]]++;
    int cnt=0;
    for (int i=0; i<a[0].size(); i++)
    {
        int u=a[0][i];
        if (!deg[u])
        {
            deg[p[u]]--;
            while (!deg[p[u]] && s.find(p[u])!=s.end())
            {
                u=p[u];
                s.erase(u);
                deg[p[u]]--;
            }
        }
        else
            s.insert(u);
        if (s.empty())
            cnt++;
    }
    return cnt;
}

Compilation message (stderr)

september.cpp: In function 'int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)':
september.cpp:13:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i=0; i<a[0].size(); i++)
      |                   ~^~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 0 / 14
• Subtask 3: 5 / 5
• Subtask 4: 9 / 9
• Subtask 5: 0 / 5
• Subtask 6: 0 / 11
• Subtask 7: 9 / 9
• Subtask 8: 11 / 11
• Subtask 9: 0 / 9
• Subtask 10: 0 / 16