Submission #376133

#	Time	Username	Problem	Language	Result	Execution time	Memory
376133		daniel920712	Lamps (JOI19_lamps)	C++14	4 / 100	12 ms	4332 KiB

lamp

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

using namespace std;
char a[1000005];
char b[1000005];
int main()
{
    int N,M,ans=0,i;
    scanf("%d",&N);
    scanf("%s %s",a,b);
    for(i=0;i<N;i++)
    {
        if(b[i]=='1'&&(i==0||b[i-1]=='0')) ans++;
    }
    printf("%d\n",ans);
    return 0;
}

Compilation message (stderr)

lamp.cpp: In function 'int main()':
lamp.cpp:10:11: warning: unused variable 'M' [-Wunused-variable]
   10 |     int N,M,ans=0,i;
      |           ^
lamp.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~
lamp.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |     scanf("%s %s",a,b);
      |     ~~~~~^~~~~~~~~~~~~

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