Submission #105055

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
105055	2019-04-10 11:01:13	antimirage	Lamps (JOI19_lamps)	C++14	100 / 100	106 ms	67064 KiB

lamp

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# include <bits/stdc++.h>
 
using namespace std;
 
const int N = 1e6 + 5;
 
int n, dp[N][4][4];
 
char a[N], b[N];
main(){ 
  memset( dp, 0x3f3f3f3f, sizeof(dp) );
  cin >> n;
  scanf("\n%s", a + 1);
  scanf("\n%s", b + 1);
  dp[0][2][0] = 0;
  for (int i = 1; i <= n; i++){
  
    for (int j = 0; j < 3; j++){
    
      if (b[i] - 48 == j){
      
        dp[i][j][0] = min(dp[i - 1][j][1], dp[i - 1][j][0]);
        
        for (int l = 0; l < 3; l++){
  
          dp[i][j][0] = min( dp[i][j][0], dp[i - 1][l][0] + 1);
          dp[i][j][0] = min( dp[i][j][0], dp[i - 1][l][1] + 1);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

lamp.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){ 
      ^
lamp.cpp: In function 'int main()':
lamp.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("\n%s", a + 1);
  ~~~~~^~~~~~~~~~~~~~~
lamp.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("\n%s", b + 1);
  ~~~~~^~~~~~~~~~~~~~~

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