Submission #1117443

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1117443	2024-11-23 15:47:15	FucKanh	Synchronization (JOI13_synchronization)	C++14	100 / 100	221 ms	38740 KiB

synchronization

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#include<bits/stdc++.h>
#define ll long long
#define int ll
#define pii pair<int,int>
using namespace std;
const int maxn = 1e5 + 2;
const int LG = 18;
int tin[maxn],tout[maxn],h[maxn],active[maxn],val[maxn], valid[maxn];
int pa[maxn][LG + 2];
pii e[maxn];
vector<int> a[maxn];
int n,m,q,T;
void dfs(int u, int par = -1) {
    tin[u] = ++T;
    for (int i = 1; i <= LG; i++) {
        pa[u][i] = pa[pa[u][i-1]][i-1];
    }
    for (int v : a[u]) if (v!=par) {
        pa[v][0] = u;
        h[v] = h[u] + 1;
        dfs(v,u);
    }
    tout[u] = ++T;
}
class BIT {
 
 
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Compilation message (stderr)

synchronization.cpp: In member function 'void BIT::update(long long int, long long int)':
synchronization.cpp:39:14: warning: statement has no effect [-Wunused-value]
   39 |         for (i;i<=n;i+= (i&(-i)) ) t[i] += v;
      |              ^
synchronization.cpp: In member function 'long long int BIT::get(long long int)':
synchronization.cpp:43:14: warning: statement has no effect [-Wunused-value]
   43 |         for (i;i;i-= (i&(-i)) ) re += t[i];
      |              ^
synchronization.cpp: In function 'void file(std::string)':
synchronization.cpp:127:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  127 |         freopen((name + ".inp").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
synchronization.cpp:128:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  128 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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