Submission #977620

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
977620	2024-05-08 07:43:21	sleepntsheep	Unique Cities (JOI19_ho_t5)	C11	100 / 100	162 ms	31292 KiB

joi2019_ho_t5

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#include<stdio.h>
#include<string.h>
#define N 200000
#define N_ (N+1)
int n, m, c[N_], head[N_], vv[N_<<1], nxt[N_<<1], i, u, v, far,dd[N_], rt, orz[N_], oo, hh[N_], longc[N_][2], fr[N_], dist, ans[N_];
void link(int u,int v)
{
    static int i=1;
    nxt[i]=head[u];
    vv[i]=v;
    head[u]=i++;
}
void dfs0(int u,int p)
{
    dd[u]=dd[p]+1;
    if(dd[u]>dd[far])far=u;
    for(int j=head[u];j;j=nxt[j])if(vv[j]-p)dfs0(vv[j],u);
}
void dfs1(int u,int p)
{
    dd[u]=dd[p]+1;
    hh[u]=0;
    for(int j=head[u];j;j=nxt[j])if(vv[j]-p)
    {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

joi2019_ho_t5.c: In function 'main':
joi2019_ho_t5.c:74:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |     scanf("%d%d",&n,&m);
      |     ^~~~~~~~~~~~~~~~~~~
joi2019_ho_t5.c:75:21: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |     for(i=1;i<n;++i)scanf("%d%d",&u,&v),link(u,v),link(v,u);
      |                     ^~~~~~~~~~~~~~~~~~~
joi2019_ho_t5.c:76:22: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     for(i=1;i<=n;++i)scanf("%d",c+i);
      |                      ^~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 32 / 32
• Subtask 3: 32 / 32
• Subtask 4: 32 / 32