Submission #92121

#	Time	Username	Problem	Language	Result	Execution time	Memory
92121		tjrwodnjs999	격자 보존하기 (GA9_preserve)	C++11	17 / 100	24 ms	2808 KiB

preserve

#include <bits/stdc++.h>
using namespace std;
int n,m,k,arr[100005],a[100005],b[100005],Max,sum;
int main()
{
    scanf("%d%d%d",&n,&m,&k);
    for(int i=0;i<m;i++) scanf("%d",&arr[i]);
    for(int i=0;i<m-1;i++) a[i]=arr[i+1]-arr[i]-1;
    sort(a,a+100005,greater<int>()); b[0]=a[0];
    for(int i=1;i<m-1;i++) b[i]+=b[i-1];
    if(k==1) Max=max(arr[0]-1,n-arr[m-1]);
    else{
        Max=max(b[k/2-1],arr[0]-1+n-arr[m-1]);
        if(k>=3) Max=max(Max,b[(k-1)/2-1]+max(arr[0]-1,n-arr[m-1]));
        if(k>=4) Max=max(Max,b[(k-2)/2-1]+arr[0]-1+n-arr[m-1]);
    }
    printf("%d",Max);
}

Compilation message (stderr)

preserve.cpp: In function 'int main()':
preserve.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d",&n,&m,&k);
     ~~~~~^~~~~~~~~~~~~~~~~~~
preserve.cpp:7:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<m;i++) scanf("%d",&arr[i]);
                          ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 17 / 17
• Subtask 3: 0 / 22
• Subtask 4: 0 / 17
• Subtask 5: 0 / 35