Submission #434885

#	Time	Username	Problem	Language	Result	Execution time	Memory
434885		jeqcho	Boxes with souvenirs (IOI15_boxes)	C++17	0 / 100	166 ms	235168 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;

typedef long double ld;
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define fi first
#define se second

int const N=1e7+3;
vector<ll> p;
int n,k;
bitset<N>vis;
vpi adj[N];
ll d[N];
int len[N];

ll delivery(int n1, int K, int L1, int p1[]) {
	k=K;
	n=n1;
	p.rsz(n);
	ll L=L1;
	F0R(i,n)p[i]=p1[i];
	F0R(i,n)
	{
		int w=p[i]*2;
		adj[0].pb({i+1,w});
	}
	F0R(i,n-1)
	{
		int w=p[i+2]-p[i+1];
		w*=2;
		adj[i+1].pb({i+2,w});
		adj[i+2].pb({i+1,w});
	}
	priority_queue<pair<int,pii>>q;
	q.push({0,{0,-1}});
	ll ans=0;
	len[0]=0;
	while(!q.empty())
	{
		int u,from;
		ll w=-q.top().fi;
		tie(u,from)=q.top().se;
		q.pop();
		if(vis[u])continue;
		vis[u]=1;
		if(from!=-1)len[u]=len[from]+1;
		ans += w;
		if(len[u]==k)continue;
		trav(e,adj[u])
		{
			if(vis[e.fi])continue;
			q.push({-e.se,{e.fi,u}});
		}
	}
	return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'll delivery(int, int, int, int*)':
boxes.cpp:40:13: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
   40 |   int w=p[i]*2;
boxes.cpp:45:15: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
   45 |   int w=p[i+2]-p[i+1];
boxes.cpp:36:5: warning: unused variable 'L' [-Wunused-variable]
   36 |  ll L=L1;
      |     ^

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