Submission #103029

#	Time	Username	Problem	Language	Result	Execution time	Memory
103029		pavel	Hacker (BOI15_hac)	C++14	0 / 100	2 ms	256 KiB

hac

#include <cstdio>
#include <algorithm>

using namespace std;

const int MAXN = 500005;

int n;
int a[MAXN];
int sum[MAXN];

int main(){
    scanf("%d", &n);
    for(int i=0;i<n;++i) scanf("%d", &a[i]);
    for(int i=0;i<(n+1)/2;++i) sum[0]+=a[i];
    for(int i=1;i<n;++i){
        sum[i]=sum[i-1]-a[i-1]+a[((i+(n+1)/2)-1+n)%n];
    }
    int sol=-1;
    for(int i=0;i<n;++i){
        sol=max(sol, min(sum[i], sum[(i+(n+1)/2-1+n)%n]));
    }
    printf("%d", sol);
}

Compilation message (stderr)

hac.cpp: In function 'int main()':
hac.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
hac.cpp:14:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<n;++i) scanf("%d", &a[i]);
                          ~~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40