Submission #754463

#	Time	Username	Problem	Language	Result	Execution time	Memory
754463		sofija6	Boxes with souvenirs (IOI15_boxes)	C++14	50 / 100	50 ms	18884 KiB

boxes

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

using namespace std;
long long delivery(int N, int K, int L, int p[]) {
    vector<int> left,right;
    for (int i=0;i<N && p[i]<=L/2;i++)
        left.push_back(p[i]);
    for (int i=N-1;i>=0 && p[i]>L/2;i--)
        right.push_back(p[i]);
    long long ans=LLONG_MAX,cur=0;
    for (int i=left.size()-1;i>=0;i-=K)
        cur+=2*left[i];
    for (int i=right.size()-1;i>=0;i-=K)
        cur+=2*(L-right[i]);
    ans=min(ans,cur);
    cur=L;
    for (int i=left.size()-left.size()%K-1;i>=0;i-=K)
        cur+=2*left[i];
    for (int i=right.size()-(K-left.size()%K)-1;i>=0;i-=K)
        cur+=2*(L-right[i]);
    ans=min(ans,cur);
    cur=L;
    for (int i=left.size()-(K-right.size()%K)-1;i>=0;i-=K)
        cur+=2*left[i];
    for (int i=right.size()-right.size()%K-1;i>=0;i-=K)
        cur+=2*(L-right[i]);
    return min(ans,cur);
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:12:27: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   12 |     for (int i=left.size()-1;i>=0;i-=K)
      |                ~~~~~~~~~~~^~
boxes.cpp:14:28: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   14 |     for (int i=right.size()-1;i>=0;i-=K)
      |                ~~~~~~~~~~~~^~
boxes.cpp:18:41: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   18 |     for (int i=left.size()-left.size()%K-1;i>=0;i-=K)
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~^~
boxes.cpp:20:46: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   20 |     for (int i=right.size()-(K-left.size()%K)-1;i>=0;i-=K)
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
boxes.cpp:24:46: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   24 |     for (int i=left.size()-(K-right.size()%K)-1;i>=0;i-=K)
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
boxes.cpp:26:43: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   26 |     for (int i=right.size()-right.size()%K-1;i>=0;i-=K)
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~

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