Submission #544528

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
544528	2022-04-02 08:41:54	iulia13	Synchronization (JOI13_synchronization)	C++14	30 / 100	579 ms	40308 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
const int LG = 20;
vector <int> g[N];
int dad[N][LG];
map <int, int> id[N];
int lvl[N], in[N], out[N], timp, card[N], inters[N], aib[N], n;
int lsb(int x)
{
    return x & (-x);
}
void upd(int x, int val)
{
    for (x; x <= n; x += lsb(x))
        aib[x] += val;
}
int qry(int x)
{
    int ans = 0;
    for (x; x; x -= lsb(x))
        ans += aib[x];
    return ans;
}
void lifting() ///used
{
    for (int j = 1; (1 << j) <= n; j++)
        for (int i = 1; i <= n; i++)
            dad[i][j] = dad[dad[i][j - 1]][j - 1];
 
 
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Compilation message (stderr)

synchronization.cpp: In function 'void upd(int, int)':
synchronization.cpp:16:10: warning: statement has no effect [-Wunused-value]
   16 |     for (x; x <= n; x += lsb(x))
      |          ^
synchronization.cpp: In function 'int qry(int)':
synchronization.cpp:22:10: warning: statement has no effect [-Wunused-value]
   22 |     for (x; x; x -= lsb(x))
      |          ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 0 / 40