Submission #897631

#	Time	Username	Problem	Language	Result	Execution time	Memory
897631		oblantis	Boxes with souvenirs (IOI15_boxes)	C++17	20 / 100	1 ms	512 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define all(v) v.begin(), v.end()
#define pb push_back
#define ss second
#define ff first
#define vt vector
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<double, int> pdi;
const ll inf = 1e18 + 10000;
const int mod = 1e9+7;
const int maxn = 1e5 + 12;
long long delivery(int n, int k, int l, int p[]) {
	deque<int> ls, mr;
	for(int i = 0; i < n; i++){
		if(p[i] <= l / 2)ls.pb(p[i]);
		else mr.pb(p[i]);
	}
	ll ret = 0;
	while(ls.size() >= k){
		int x = ls.back();
		for(int i = 0; i < k; i++){
			ls.pop_back();
		}
		ret += x * 2;
	}
	while(mr.size() >= k){
		int x = mr.front();
		for(int i = 0; i < k; i++){
			mr.pop_front();
		}
		ret += (l - x) * 2;	
	}
	if(mr.empty() && ls.empty())return ret;
	else if(mr.empty() && !ls.empty())ret += ls.back() * 2;
	else if(!mr.empty() && ls.empty())ret += (l - mr.front()) * 2;
	else if(mr.size() + ls.size() > k)ret += ls.back() * 2 + (l - mr.front()) * 2;
	else ret += min(l, ls.back() * 2 + (l - mr.front()) * 2);
	return ret;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:28:18: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   28 |  while(ls.size() >= k){
      |        ~~~~~~~~~~^~~~
boxes.cpp:35:18: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |  while(mr.size() >= k){
      |        ~~~~~~~~~~^~~~
boxes.cpp:45:32: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |  else if(mr.size() + ls.size() > k)ret += ls.back() * 2 + (l - mr.front()) * 2;
      |          ~~~~~~~~~~~~~~~~~~~~~~^~~

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