Submission #589859

#	Time	Username	Problem	Language	Result	Execution time	Memory
589859		FatihSolak	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	1 ms	308 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> a,b;
    for(int i = 0;i<n;i++){
        if(2*p[i] <= l){
            a.push_back(p[i]);
        }
    }
    for(int i = n-1;i>=0;i--){
        if(2*(l-p[i]) < l){
            b.push_back(p[i]);
        }
    }
    vector<long long> dpa(a.size(),0),dpb(b.size(),0);
    for(int i = 0;i<a.size();i++){
        dpa[i] = 2 * a[i];
        if(i - k >= 0){
            dpa[i] += dpa[i-k];
        }
    }
    for(int i = 0;i<b.size();i++){
        dpb[i] = 2 * (l-b[i]);
        if(i - k >= 0){
            dpb[i] += dpb[i-k];
        }
    }
    if(b.empty())return dpa[a.size()-1]; 
    if(a.empty())return dpb[b.size()-1];
    long long ans = dpa[a.size()-1] + dpb[b.size()-1];
    for(int i = a.size()-k;i<a.size();i++){
        long long val = l;
        if(i >= 0){
            val += dpa[i];
        }
        if(b.size()-1 - (k-(a.size() - i - 1)) >= 0){
            val += dpb[b.size()-1 - (k-(a.size() - i - 1))];
        }
        ans = min(ans,val);
    }
    return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:17:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i = 0;i<a.size();i++){
      |                   ~^~~~~~~~~
boxes.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i = 0;i<b.size();i++){
      |                   ~^~~~~~~~~
boxes.cpp:32:25: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   32 |     for(int i = a.size()-k;i<a.size();i++){
      |                 ~~~~~~~~^~
boxes.cpp:32:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(int i = a.size()-k;i<a.size();i++){
      |                            ~^~~~~~~~~
boxes.cpp:37:48: warning: comparison of unsigned expression in '>= 0' is always true [-Wtype-limits]
   37 |         if(b.size()-1 - (k-(a.size() - i - 1)) >= 0){
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~

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