Submission #129820

#	Time	Username	Problem	Language	Result	Execution time	Memory
129820		DodgeBallMan	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	7 ms	376 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"

using namespace std;

const int N = 1e6 + 10;
long long ans = 1e18, dpr[N], dpl[N], n, k, l, p[N];

long long delivery( int N, int K, int L, int P[] ) {
    n = ( long long )N, k = ( long long )K, l = ( long long )L;
    for( int i = 1 ; i <= n ; i++ ) p[i] = ( long long )P[i-1];
    for( int i = 1 ; i <= n ; i++ ) dpr[i] = p[i] <= l / 2 ? p[i] * 2LL : l + dpr[max( 0LL, ( long long )i - k )];
    for( int i = n ; i >= 1 ; i-- ) dpl[i] = p[i] >= l / 2 ? ( l - p[i] ) * 2LL : l + dpl[min( l + 1, ( long long )i + k )];
    for( int i = 0 ; i <= n ; i++ ) ans = min( ans, dpr[i] + dpl[i+1] );
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:9:50: warning: declaration of 'N' shadows a global declaration [-Wshadow]
 long long delivery( int N, int K, int L, int P[] ) {
                                                  ^
boxes.cpp:6:11: note: shadowed declaration is here
 const int N = 1e6 + 10;
           ^
boxes.cpp:13:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
     for( int i = n ; i >= 1 ; i-- ) dpl[i] = p[i] >= l / 2 ? ( l - p[i] ) * 2LL : l + dpl[min( l + 1, ( long long )i + k )];
                  ^

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30