Submission #70465

#	Time	Username	Problem	Language	Result	Execution time	Memory
70465		Diuven	오렌지 출하 (JOI16_ho_t1)	C++14	100 / 100	139 ms	5616 KiB

2016_ho_t1

#include <cstdio>
typedef long long ll;
const int inf=2e9;
const ll linf=2e18;

ll min(ll a, ll b){ return a<b ? a : b; }
ll max(ll a, ll b){ return a>b ? a : b; }

int n, m, k, A[20010];
ll D[20010];

ll d(int i){
    if(D[i]>=0) return D[i];
    D[i]=linf;
    for(int s=1, a=-inf, b=inf; s<=m; s++){
        if(i<s) break;
        a=max(a, A[i-s+1]), b=min(b, A[i-s+1]);
        D[i]=min(D[i], d(i-s)+k+s*ll(a-b));
    }
    return D[i];
}

int main(){
    scanf("%d%d%d", &n, &m, &k);
    for(int i=1; i<=n; i++) scanf("%d", A+i);

    for(int i=1; i<=n; i++) D[i]=-1;
    D[0]=0;

    printf("%lld\n", d(n));
    return 0;
}

Compilation message (stderr)

2016_ho_t1.cpp: In function 'int main()':
2016_ho_t1.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
2016_ho_t1.cpp:25:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i=1; i<=n; i++) scanf("%d", A+i);
                             ~~~~~^~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 50 / 50
• Subtask 3: 30 / 30