Submission #403173

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
403173	2021-05-12 21:44:32	monus1042	Boxes with souvenirs (IOI15_boxes)	C++17	20 / 100	1 ms	204 KiB

boxes

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll inf = 8e18;
ll subtwo(int N, int K, int L, int p[]){
  ll answer = 0;
  if (L==1) return answer;
    int mxd = L/2;
  int cnt = 0, cntright = 0;
  for (int i=0; i<N; i++){
    if (p[i] <= mxd) cnt++;
    if ((p[i] == 0 || p[i] >= mxd+1) && N%2==1) cntright++;
    else if ((p[i] == 0 || p[i] >= mxd) && N%2==0) cntright++;
  }
  if (cnt == N) return 2LL*p[N-1];
  if (cntright == N) return 2LL*(L-p[0]);
  answer = L;
  ll maxleft, maxright;
  maxleft = maxright = 0;
    for (int i=0; i<N; i++){
    if (p[i] <= mxd){
      maxleft = max(maxleft,(ll)p[i]);
    }else{
      maxright = max(maxright, (ll)L-p[i]);
    }
  }
  ll answer2 = maxleft*2LL + maxright*2LL;
  answer = min(answer, answer2);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

boxes.cpp: In function 'll subtwo(int, int, int, int*)':
boxes.cpp:7:22: warning: unused parameter 'K' [-Wunused-parameter]
    7 | ll subtwo(int N, int K, int L, int p[]){
      |                  ~~~~^
boxes.cpp: In function 'll subone(int, int, int, int*)':
boxes.cpp:34:22: warning: unused parameter 'K' [-Wunused-parameter]
   34 | ll subone(int N, int K, int L, int p[]){
      |                  ~~~~^
boxes.cpp: In function 'll computeR(std::vector<long long int>&, std::vector<long long int>&, int, int, int, int)':
boxes.cpp:43:25: warning: conversion from 'std::vector<long long int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   43 |  int szlef = ldp.size() - 1, szrig = rdp.size() - 1;
      |              ~~~~~~~~~~~^~~
boxes.cpp:43:49: warning: conversion from 'std::vector<long long int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   43 |  int szlef = ldp.size() - 1, szrig = rdp.size() - 1;
      |                                      ~~~~~~~~~~~^~~
boxes.cpp: In function 'll subAllPoints(int, int, int, int*)':
boxes.cpp:61:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |  for (int i=0; i<ar.size(); i++){
      |                ~^~~~~~~~~~
boxes.cpp:70:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for (int i=0; i<le.size(); i++){
      |                ~^~~~~~~~~~
boxes.cpp:76:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |  for (int i=0; i<ri.size(); i++){
      |                ~^~~~~~~~~~
boxes.cpp:84:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |  for (int i=0; i<ldp.size(); i++){
      |                ~^~~~~~~~~~~

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