Submission #51771

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
51771	2018-06-21 05:10:54	model_code	Telegraph (JOI16_telegraph)	C++17	100 / 100	51 ms	58160 KiB

telegraph

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#include <cstdio>
#include <algorithm>
using namespace std;
const int MAXN=100000;
int main()
{
  int n;
  scanf("%d",&n);
  static int A[MAXN];
  static long long C[MAXN];
  for(int i=0;i<n;i++){
    scanf("%d%lld",A+i,C+i);
    A[i]--;
  }
  static int b[MAXN];
  for(int i=0;i<n;i++){
    b[i]=-1;
  }
  bool F=0;
  for(int i=0;i<n;i++){
    if(b[i]!=-1){
      continue;
    }
    int j=i;
    while(b[j]==-1){
      b[j]=i;
      j=A[j];
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

telegraph.cpp: In function 'int main()':
telegraph.cpp:10:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
   ~~~~~^~~~~~~~~
telegraph.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%lld",A+i,C+i);
     ~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 30 / 30
• Subtask 4: 30 / 30