제출 #376140

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
376140		daniel920712	Lamps (JOI19_lamps)	C++14	0 / 100	1091 ms	81772 KiB

lamp

#include <iostream>
#include <stdio.h>
#include <stdlib.h>

using namespace std;
char a[1000005];
char b[1000005];
bool have[1000005]={0};
int DP[1000005],N;
int F(int here)
{
    int i,tt;
    if(here==N) return 0;
    if(have[here]) return DP[here];
    have[here]=1;
    if(a[here]==b[here]) DP[here]=F(here+1);
    else DP[here]=F(here+1)+1;
    tt=0;
    for(i=here;i<N;i++)
    {
        if(b[i]=='1'&&(i==here||b[i-1]=='0')) tt++;
        DP[here]=min(DP[here],F(i+1)+tt+1);
    }
    tt=0;
    for(i=here;i<N;i++)
    {
        if(b[i]=='0'&&(i==here||b[i-1]=='1')) tt++;
        DP[here]=min(DP[here],F(i+1)+tt+1);
    }
    tt=0;
    for(i=here;i<N;i++)
    {
        if(a[i]==b[i]&&(i==here||a[i-1]!=b[i-1])) tt++;
        DP[here]=min(DP[here],F(i+1)+tt+1);

    }
    return DP[here];

}
int main()
{
    int M,ans=0,i;
    scanf("%d",&N);
    scanf("%s %s",a,b);

    printf("%d\n",F(0));
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

lamp.cpp: In function 'int main()':
lamp.cpp:42:9: warning: unused variable 'M' [-Wunused-variable]
   42 |     int M,ans=0,i;
      |         ^
lamp.cpp:42:11: warning: unused variable 'ans' [-Wunused-variable]
   42 |     int M,ans=0,i;
      |           ^~~
lamp.cpp:42:17: warning: unused variable 'i' [-Wunused-variable]
   42 |     int M,ans=0,i;
      |                 ^
lamp.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   43 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
lamp.cpp:44:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   44 |     scanf("%s %s",a,b);
      |     ~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 41
• Subtask 3: 0 / 4
• Subtask 4: 0 / 49