Submission #397157

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
397157	2021-05-01 15:46:02	keta_tsimakuridze	Synchronization (JOI13_synchronization)	C++14	100 / 100	491 ms	29592 KiB

synchronization

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#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=2e5+5,mod=1e9+7;
int t,cnt[N],pos[N],ind[N],cur,n,m,q,u[N],v[N],bef[N],par[N],sz[N],st[N],ch[N],idx,f[N];
vector<int>V[N];
pair<int,int> tree[4*N];
string s;
void update(int u,int ind,int l,int r,int val){
  if(l>ind || r<ind) return;
  if(l==r) {
    tree[u]={val,l};
    return;
  }
  int mid=(l+r)/2;
  update(2*u,ind,l,mid,val);
  update(2*u+1,ind,mid+1,r,val);
  tree[u]=max(tree[2*u],tree[2*u+1]);
}
pair<int,int> getans(int u,int start,int end,int l,int r){
  if(l>end || r<start) return {0,0};
  if(start<=l && r<=end) return tree[u];
  int mid=(l+r)/2;
  return max( getans(2*u,start,end,l,mid),getans(2*u+1,start,end,mid+1,r) );
}
void get_sz(int u,int p){
  sz[u] = 1;
  cnt[u] = 1;
 
 
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Compilation message (stderr)

synchronization.cpp: In function 'void get_sz(long long int, long long int)':
synchronization.cpp:31:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(int i=0;i<V[u].size();i++){
      |              ~^~~~~~~~~~~~
synchronization.cpp: In function 'void dfs(long long int, long long int)':
synchronization.cpp:43:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |  for(int i=0;i<V[u].size();i++){
      |              ~^~~~~~~~~~~~
synchronization.cpp:47:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(int i=0;i<V[u].size();i++){
      |              ~^~~~~~~~~~~~
synchronization.cpp: At global scope:
synchronization.cpp:74:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   74 |  main(){
      |       ^
synchronization.cpp: In function 'long long int get(long long int)':
synchronization.cpp:61:1: warning: control reaches end of non-void function [-Wreturn-type]
   61 | }
      | ^

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