Submission #310912

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
310912	2020-10-08 13:29:26	vipghn2003	Examination (JOI19_examination)	C++14	100 / 100	1308 ms	92000 KiB

examination

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#include <bits/stdc++.h>
#define pii pair<int,int>
#define fi first
#define se second
#define mp make_pair
using namespace std;
const int N=1e5+5;
struct BIT2D
{
    const int inf = 2e9;
    int n;
    vector<vector<int>>nodes,f;
    void fakeUpdate(int u, int v)
    {
        for (int x = u; x > 0; x -= x & -x) nodes[x].push_back(v);
    }
    void fakeGet(int u, int v)
    {
        for (int x = u; x <= n; x += x & -x) nodes[x].push_back(v);
    }
    void update(int u, int v)
    {
        for (int x = u; x > 0; x -= x & -x)
        {
            for (int y = upper_bound(nodes[x].begin(), nodes[x].end(), v) - nodes[x].begin(); y > 0; y -= y & -y)
                f[x][y]++;
        }
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

examination.cpp: In member function 'int BIT2D::get(int, int)':
examination.cpp:36:101: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |             for (int y = lower_bound(nodes[x].begin(), nodes[x].end(), v) - nodes[x].begin() + 1; y <= nodes[x].size(); y += y & -y)
      |                                                                                                   ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57