Submission #1122630

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
11226302024-11-30 16:10:25ntdaccodeReconstruction Project (JOI22_reconstruction)C++17
7 / 100
5092 ms8272 KiB
#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define int long long
#define pb push_back
using namespace std;
typedef pair<int,int> ii;
typedef tuple<int,int,int> tp;
const int M = 1e6 + 10;
const int N = 1e3 + 10;
const int mod = 1e9 + 7;
int n, m, q, uu[M], vv[M], ww[M];
int id[M];
int finded(int u)
{
return id[u] < 0 ? u : id[u] = finded(id[u]);
}
bool unioned(int u,int v)
{
u = finded(u);
v = finded(v);
if(v == u) return false;
if(id[u] > id[v]) swap(u,v);
id[u] += id[v];
id[v] = u;
 
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Compilation message (stderr)

reconstruction.cpp: In function 'int32_t main()':
reconstruction.cpp:41:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |     freopen("1.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
reconstruction.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen("1.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~
reconstruction.cpp:47:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
reconstruction.cpp:48:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     freopen(task".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
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