Submission #445310

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
445310	2021-07-17 11:48:50	cpp219	Synchronization (JOI13_synchronization)	C++14	100 / 100	337 ms	28100 KiB

synchronization

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#pragma GCC optimization O2
#pragma GCC optimization "unroll-loop"
#pragma target ("avx2")
#include <bits/stdc++.h>
#define ll int
#define ld long double
#define fs first
#define sc second
using namespace std;
typedef pair<ll,ll> LL;
const ll N = 1e5 + 9;
const ll Log2 = 20;
const ll inf = 1e9 + 7;
LL edge[N];
vector<ll> g[N];
ll n,m,Q,x,y,id,nTime = 1,cur[N],par[N][Log2];
ll L[N],R[N],d[N],bit[N],info[N],last[N];
void DFS(ll u,ll p){
    for (ll i = 1;i < Log2;i++) if ((1 << i) <= d[u])
        par[u][i] = par[par[u][i - 1]][i - 1];
    L[u] = R[u] = nTime; nTime++;
    for (auto i : g[u]) if (i != p){
        par[i][0] = u;
        d[i] = d[u] + 1; DFS(i,u); R[u] = max(R[u],R[i]);
    }
}
void upd(ll p,ll val){
 
 
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Compilation message (stderr)

synchronization.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization O2
      | 
synchronization.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
synchronization.cpp:3: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    3 | #pragma target ("avx2")
      | 
synchronization.cpp: In function 'int main()':
synchronization.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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