Submission #71739

#	Time	Username	Problem	Language	Result	Execution time	Memory
71739		퍼솔 가즈아ㅏㅏㅏ (#119)	Angelic Hourglass (FXCUP3_hourglass)	C++98	100 / 100	3 ms	620 KiB

hourglass

#include <cstdio>
int a[20]={0,0,0,1,-1,1,2,4,2,3,2,3,4,3,4,3};
int main(){
    int N;
    scanf("%d",&N);
    if(N<16) printf("%d",a[N]);
    else{
        if(N%5==0) printf("%d",N/5);
        else if(N%5==1 || N%5==3) printf("%d",N/5+1);
        else printf("%d",N/5+2);
    }
}

Compilation message (stderr)

hourglass.cpp: In function 'int main()':
hourglass.cpp:5:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&N);
     ~~~~~^~~~~~~~~

• Subtask 1: 17 / 17
• Subtask 2: 42 / 42
• Subtask 3: 41 / 41