oj.uz

답안 #1116768

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1116768 2024-11-22T10:56:47 Z firewater Lamps (JOI19_lamps) C++14
4 / 100
 63 ms 51408 KB 
#include<bits/stdc++.h>
#define N 1001000
using namespace std;
int n,ans,a[N],b[N],f[N][5][2];
char s1[N],s2[N];
int main()
 {
 	scanf("%d%s%s",&n,s1+1,s2+1);
	for(int i=1;i<=n;++i)
 		a[i]=s2[i]-'0'+1,b[i]=(s1[i]!=s2[i]);
 	memset(f,127/3,sizeof(f));
    f[0][0][0]=0;
 	for(int i=1;i<=n;++i)
 		for(int j=0;j<=2;++j)
            for(int k=0;k<=1;++k){
                f[i][0][b[i]]=min(f[i][0][b[i]],f[i-1][j][k]+(b[i]&&(b[i]!=k)));
                if(j){
                    f[i][j][k]=min(f[i][j][k],f[i-1][j][k]+(a[i]!=j&&a[i]!=a[i-1]));
                    f[i][j][k%2+1]=min(f[i][j][k%2+1],f[i-1][j][k]+(!k)+(a[i]==j||a[i]==a[i-1]));
                }
                f[i][a[i]][k]=min(f[i][a[i]][k],f[i-1][j][k]+1);
            }
 	ans=f[0][0][1];
 	for(int j=0;j<=2;++j)
        for(int k=0;k<=1;++k)
 	ans=min(ans,f[n][j][k]);
 	printf("%d\n",ans);
 	return 0;
 }

Compilation message

lamp.cpp: In function 'int main()':
lamp.cpp:8:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |   scanf("%d%s%s",&n,s1+1,s2+1);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 43344 KB Output is correct
2 Correct 12 ms 43344 KB Output is correct
3 Correct 14 ms 43544 KB Output is correct
4 Correct 17 ms 43344 KB Output is correct
5 Correct 20 ms 43336 KB Output is correct
6 Correct 14 ms 43344 KB Output is correct
7 Correct 14 ms 43440 KB Output is correct
8 Correct 17 ms 43344 KB Output is correct
9 Incorrect 14 ms 43344 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 43344 KB Output is correct
2 Correct 12 ms 43344 KB Output is correct
3 Correct 14 ms 43544 KB Output is correct
4 Correct 17 ms 43344 KB Output is correct
5 Correct 20 ms 43336 KB Output is correct
6 Correct 14 ms 43344 KB Output is correct
7 Correct 14 ms 43440 KB Output is correct
8 Correct 17 ms 43344 KB Output is correct
9 Incorrect 14 ms 43344 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 43344 KB Output is correct
2 Correct 19 ms 43344 KB Output is correct
3 Correct 13 ms 43344 KB Output is correct
4 Correct 12 ms 43344 KB Output is correct
5 Correct 14 ms 43384 KB Output is correct
6 Correct 18 ms 43472 KB Output is correct
7 Correct 56 ms 51272 KB Output is correct
8 Correct 55 ms 51272 KB Output is correct
9 Correct 62 ms 51280 KB Output is correct
10 Correct 63 ms 51280 KB Output is correct
11 Correct 51 ms 51280 KB Output is correct
12 Correct 51 ms 51408 KB Output is correct
13 Correct 58 ms 51272 KB Output is correct
14 Correct 53 ms 51280 KB Output is correct

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 43344 KB Output is correct
2 Correct 12 ms 43344 KB Output is correct
3 Correct 14 ms 43544 KB Output is correct
4 Correct 17 ms 43344 KB Output is correct
5 Correct 20 ms 43336 KB Output is correct
6 Correct 14 ms 43344 KB Output is correct
7 Correct 14 ms 43440 KB Output is correct
8 Correct 17 ms 43344 KB Output is correct
9 Incorrect 14 ms 43344 KB Output isn't correct
10 Halted 0 ms 0 KB -