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답안 #147307

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
147307 2019-08-28T19:09:44 Z joylintp Arranging Shoes (IOI19_shoes) C++14
0 / 100
 849 ms 1048580 KB 
#include<bits/stdc++.h>
#include "shoes.h"

using namespace std;

bool visit[2000001] = {};
long long n, ret = 0, bit[2000001] = {}, s[2000001], ans[2000001];
queue<int> Left[1000001], Right[1000001];

void bld(void)
{
    for (int i = 2; i <= n + 10; i++)
        bit[i] = i - max(1, i - (i & -i));
}

long long sum(int x)
{
    long long ret = 0;
    for (int i = x; i >= 1; i -= (i & -i))
        ret += bit[i];
    return ret;
}

void edt(int x, int k)
{
    for (int i = x; i <= n; i += (i & -i))
        bit[i] -= k;
}

long long count_swaps(vector<int> in)
{
    n = in.size();
    s[0] = 0;
    for (int i = 1; i <= n; i++)
    {
        s[i] = in[i - 1];
        if (s[i] < 0)
            Left[-s[i]].push(i);
        else
            Right[s[i]].push(i);
    }
    bld();

    int cnt = 0, pos, tar;
    for (int i = 1; i <= n; i++)
    {
        if (visit[i])
            continue;

        tar = -abs(s[i]);
        pos = Left[-tar].front(), Left[-tar].pop();
        ans[cnt++] = tar;
        visit[pos] = true;
        ret += sum(pos);
        edt(pos, 1);

        tar = -ans[cnt - 1];
        pos = Right[tar].front(), Right[tar].pop();
        ans[cnt++] = tar;
        visit[pos] = true;
        ret += sum(pos);
        edt(pos, 1);
    }

	return ret;
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 849 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 849 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 849 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 843 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 849 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 849 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -