제출 #967124

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
967124	2024-04-21 07:36:04	sleepntsheep	수도 (JOI20_capital_city)	C11	100 / 100	405 ms	24300 KiB

capital_city

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#include <stdio.h>
#define N 200000
#define M (2*N-2)
#define N_ N+1
#define M_ M+1
#define K N
int n, k, color[N], answer;
/* graph */
int head[N], nxt[M_], vv[M_];
/* node with color */
int head_[K], nxt_[N_], vv_[N_];
void link(int*head, int*nxt, int*vv, int*i, int u, int v)
{
    nxt[i[0]] = head[u];
    vv[i[0]] = v;
    head[u] = i[0]++;
}
int dead[N], sz[N];
void dfs2(int u, int p)
{
    sz[u] = 1;
    for (int j = head[u]; j; j = nxt[j])
    {
        if (vv[j] == p || dead[vv[j]])
 
 
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컴파일 시 표준 에러 (stderr) 메시지

capital_city.c: In function 'centroid_decomposition':
capital_city.c:87:18: warning: unused variable 'at' [-Wunused-variable]
   87 |         for (int at, jj = head_[col]; jj; jj = nxt_[jj])
      |                  ^~
capital_city.c: In function 'main':
capital_city.c:118:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  118 |     scanf("%d%d", &n, &k);
      |     ^~~~~~~~~~~~~~~~~~~~~
capital_city.c:122:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  122 |         scanf("%d%d", &u, &v); --u, --v;
      |         ^~~~~~~~~~~~~~~~~~~~~
capital_city.c:128:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  128 |         scanf("%d", color+i);
      |         ^~~~~~~~~~~~~~~~~~~~

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