Submission #126425

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
126425	2019-07-07 17:22:08	TadijaSebez	Lamps (JOI19_lamps)	C++11	100 / 100	452 ms	43644 KiB

lamp

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#include <bits/stdc++.h>
using namespace std;
const int N=1000050;
const int inf=1e9+7;
int dp[N][2][5];
char a[N],b[N];
int main()
{
  int n;
  scanf("%i %s %s",&n,a+1,b+1);
  for(int i=0;i<2;i++) for(int j=0;j<5;j++) dp[0][i][j]=inf;
  dp[0][0][0]=0;
  for(int i=1;i<=n;i++)
  {
        for(int j=0;j<2;j++)
        {
      for(int k=0;k<5;k++)
      {
        int mask=min(k,3)+j*4;
        int now=a[i]-'0';
        if(k>0 && (k&1)) now=0;
        else if(k>0) now=1;
        if(j) now^=1;
        dp[i][j][k]=inf;
        if(now==b[i]-'0')
        {
          for(int j2=0;j2<2;j2++)
          {
            for(int k2=0;k2<5;k2++)
            {
 
 
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Compilation message (stderr)

lamp.cpp: In function 'int main()':
lamp.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %s %s",&n,a+1,b+1);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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