Submission #1081226

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Source Code Expand

#include<stdio.h>
typedef long long LL;

LL f(LL x)
{
    if(x%2)return 11*(x/2)+6;
    return 11*(x/2);
}

int main()
{
    LL s=0,e=1e15,X,mid,mem;
    scanf("%lld", &X);
    while(s<=e){
        mid=(s+e)/2;
        if(f(mid)>=X)mem=mid,e=mid-1;
        else s=mid+1;
    }
    printf("%lld", mem);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld", &X);
                      ^

Judge Result