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Submission #173915

# Submission time Handle Problem Language Result Execution time Memory
173915 2020-01-05T19:27:04 Z stefdasca Dancing Elephants (IOI11_elephants) C++14
10 / 100
 2 ms 376 KB 
#include<bits/stdc++.h>

using namespace std;

int n, lg;

int vals[150002], srt[150002];
void init(int N, int L, int X[])
{
    n = N;
    lg = L;
    for(int i = 1; i <= N; ++i)
        srt[i] = X[i-1], vals[i] = X[i-1];
    sort(srt + 1, srt + n + 1);
    srt[n+1] = 2100000000;
}

int binsearch(int val)
{
    int st = 1;
    int dr = n;
    int ans = 0;
    while(st <= dr)
    {
        int mid = (st + dr) / 2;
        if(srt[mid] <= val)
            ans = mid, st = mid + 1;
        else
            dr = mid - 1;
    }
    return ans;
}
int nw[150002];
int update(int xx, int y)
{
    ++xx;
    if(n == 2)
    {
        vals[xx] = y;
        if(abs(vals[1] - vals[2]) > lg)
            return 2;
        return 1;
    }
    int aa = 0;
    if(y == vals[xx]);
    else
    {
        if(y > vals[xx])
        {
            int pz = binsearch(y);
            if(srt[pz] == vals[xx])
                srt[pz] = vals[xx];
            else
            {
                nw[pz-1] = y;
                int pp = 1;
                for(int i = 1; i <= n; ++i)
                {
                    if(srt[i] == vals[xx])
                        continue;
                    nw[pp++] = srt[i];
                    if(pp == pz-1)
                        ++pp;
                }
                for(int i = 1; i <= n; ++i)
                    srt[i] = nw[i];
            }
            vals[xx] = y;
        }
        else
        {
            aa = 1;
            int yy = y;
            for(int i = 1; i <= n; ++i)
            {
                if(srt[i] == vals[xx])
                    continue;
                if(yy <= srt[i])
                    nw[aa++] = yy, yy = 2100000000;
                nw[aa++] = srt[i];
            }
            for(int i = 1; i <= n; ++i)
                srt[i] = nw[i];
            vals[xx] = y;
        }
    }
    int ans = 0;
    int st = 0;
    for(int i = 1; i <= n;)
    {
        ++ans;
        st = srt[i];
        while(i <= n && srt[i] - st <= lg)
            ++i;
    }
    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -