제출 #20889

#제출 시각아이디문제언어결과실행 시간메모리
20889baneling100Boxes with souvenirs (IOI15_boxes)C++98
10 / 100
2 ms376 KiB
#include "boxes.h"
#include <algorithm>

using namespace std;

long long Res1, Res2;

long long delivery(int N, int K, int L, int p[]) {

    int i, s;

    for(i=0 ; i<N ; i++)
        if(p[i])
            break;
    s=i;
    while(i+K-1<N && p[i+K-1]<=L/2) {
        Res1+=2*p[i+K-1];
        i+=K;
    }
    if(i<N && p[i]<=L/2) {
        Res1+=L;
        i+=K;
    }
    while(i<N) {
        Res1+=2*(L-p[i]);
        i+=K;
    }
    i=N-1;
    while(i-K+1>=s && p[i-K+1]>=L/2) {
        Res2+=2*(L-p[i-K+1]);
        i-=K;
    }
    if(i>=s && p[i]>=L/2) {
        Res2+=L;
        i-=K;
    }
    while(i>=s) {
        Res2+=2*p[i];
        i-=K;
    }
    return min(Res1,Res2);

    return 0;
}
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