Submission #1364435

#	Time	Username	Problem	Language	Result	Execution time	Memory
1364435		activedeltorre	Triple Peaks (IOI25_triples)	C++20	5.29 / 100	9 ms	1948 KiB

triples

#include "triples.h"
#include <cassert>
#include <cstdio>
#include <vector>

using namespace std;
long long count_triples(std::vector<int> H)
{
    int n=H.size(),hmax=0,z;
    for(int i=1; i<=n; i++)
    {
        hmax=max(hmax,H[i-1]);
    }
    int cnt=0;
    for(int i=1; i<=n; i++)
    {
        int j=i-H[i-1];
        if(j>=1)
        {
            int z=j+H[j-1];
            if(z+H[z-1]==i)
            {
                cnt++;
            }
            int z2=i-H[j-1];
            if(z2+H[z2-1]==i  && z2!=z)
            {
                cnt++;
            }
        }
    }
    return cnt;
}

std::vector<int> construct_range(int M, int K)
{
    vector<int>rasp;
    for(int i=0; i<M; i++)
    {
        if(i%3==1)
            rasp.push_back(2);
        else
            rasp.push_back(1);
    }
    return rasp;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 0 / 6
• Subtask 3: 0 / 10
• Subtask 4: 0 / 11
• Subtask 5: 0 / 16
• Subtask 6: 0 / 19
• Subtask 7: 3 / 5
• Subtask 8: 1.245 / 5
• Subtask 9: 0.4998 / 5
• Subtask 10: 0.2143 / 5
• Subtask 11: 0.25 / 5
• Subtask 12: 0.0833 / 5