Submission #1258406

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258406		Faggi	Triple Peaks (IOI25_triples)	C++20	13.65 / 100	13 ms	2376 KiB

triples

#include <bits/stdc++.h>
#define ll long long
#define sz(x) int(x.size())
#define forn(i, n) for (i = 0; i < n; i++)
#define all(x) x.begin(), x.end()
#define pb push_back
#define mp make_pair
#define fr first
#define se second
using namespace std;
long long count_triples(std::vector<int> H)
{
    ll cant = 0, i, ant=0, sig;
    for(i=0; i<sz(H); i++)
    {
        ant=i-H[i];
        if(ant>=0)
        {
            sig=ant+H[ant];
            if(H[sig]==(i-sig))
                cant++;
            if(i-H[ant]!=sig&&i-H[ant]>=0)
            {
                sig=i-H[ant];
                if(H[sig]==(sig-ant))
                    cant++;
            }
        }
    }
    return cant;
}

std::vector<int> construct_range(int M, int K)
{
    vector<int>v(M);
    ll i;
    for(i=0; i<M/2; i++)
        v[i]=i+1;
    for(i=M/2; i<M; i++)
        v[i]=i;
    return v;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 0 / 6
• Subtask 3: 0 / 10
• Subtask 4: 11 / 11
• Subtask 5: 0 / 16
• Subtask 6: 0 / 19
• Subtask 7: 1.5 / 5
• Subtask 8: 0.6225 / 5
• Subtask 9: 0.2499 / 5
• Subtask 10: 0.1071 / 5
• Subtask 11: 0.125 / 5
• Subtask 12: 0.0417 / 5