Submission #110512

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
110512	2019-05-11 05:07:27	AngusRitossa	Lamps (JOI19_lamps)	C++14	100 / 100	226 ms	25948 KiB

lamp

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#include <bits/stdc++.h>
using namespace std;
int memo[1000010][2], done[1000010][2], a[1000010], b[1000010], n, loopcost[1000010][2];
int main()
{
  scanf("%d", &n);
  for (int i = 0; i < n; i++) 
  {
    char c;
    scanf(" %c", &c);
    a[i] = c-'0';
  }
  for (int i = 0; i < n; i++) 
  {
    char c;
    scanf(" %c", &c);
    b[i] = c-'0';
  }
  for (int i = n-1; i >= 0; i--)
  {
    for (int t = 0; t < 2; t++)
    {
      loopcost[i][t] = 1e9;
      int ans = 1e9;
      if (a[i] == (b[i]^t)) 
      { 
        ans = min(ans, memo[i+1][t]);
      }
      else ans = min(ans, memo[i+1][!t] + !t); 
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

lamp.cpp: In function 'int main()':
lamp.cpp:7:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
lamp.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &c);
   ~~~~~^~~~~~~~~~~
lamp.cpp:17:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %c", &c);
   ~~~~~^~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 41 / 41
• Subtask 3: 4 / 4
• Subtask 4: 49 / 49