Submission #136940

#	Time	Username	Problem	Language	Result	Execution time	Memory
136940		ksmzzang2003	오렌지 출하 (JOI16_ho_t1)	C++14	100 / 100	78 ms	1656 KiB

2016_ho_t1

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll N,M,K,arr[20003],memo[20003];
ll f(ll n) {
    if(n<0)
        return 1LL<<61;
    if(n==0)
        return 0;
    if(memo[n]!=-1)
        return memo[n];
    ll ret = 1LL<<60;
    ll maxv=-1,minv=1LL<<61;
    for(ll i=n; i>=n-M+1; i--) {
        maxv = max(maxv,arr[i]); minv= min(minv,arr[i]);
        ret = min(ret,f(i-1)+K+(n+1-i)*(maxv-minv));
    }
    return memo[n] = ret;
}

int main() {
    fill(memo,memo+20003,-1);
    scanf("%lld %lld %lld",&N,&M,&K);
    for(ll i=1; i<=N; i++)
        scanf("%lld",&arr[i]);
    printf("%lld",f(N));
}

Compilation message (stderr)

2016_ho_t1.cpp: In function 'int main()':
2016_ho_t1.cpp:23:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld %lld",&N,&M,&K);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
2016_ho_t1.cpp:25:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&arr[i]);
         ~~~~~^~~~~~~~~~~~~~~~

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