Submission #781969

#	Time	Username	Problem	Language	Result	Execution time	Memory
781969		Lyrically	Boxes with souvenirs (IOI15_boxes)	C++17	35 / 100	901 ms	332 KiB

boxes

#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define pb push_back
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
int read(){int x;scanf("%d",&x);return x;}
void print(int x){printf("%d\n",x);}
const int mod=1000000007;
long long delivery(int n,int k,int l,int p[])
{
    double st=clock();
    long long res=(1LL<<60);
    while(clock()-st<0.9*CLOCKS_PER_SEC)
    {
        long long tot=0; 
	    for(int i=0;i<n;i+=k)
	    {
		    vector<int> v;
		    for(int j=i;j<=min(i+k-1,n-1);j++){v.pb(p[j]);}
		    int tmp=l;
		    int ldis=0,rdis=0;
		    for(auto x:v)
		    {
			    if(x<=l-x){ldis=max(ldis,x);}
			    else{rdis=max(rdis,l-x);}
	    	}
		    tmp=min(tmp,2*(ldis+rdis));
		    tot+=tmp;
	    }
	    res=min(res,tot);random_shuffle(p,p+n);
    }
	return res;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:12:20: warning: conversion from 'clock_t' {aka 'long int'} to 'double' may change value [-Wconversion]
   12 |     double st=clock();
      |               ~~~~~^~
boxes.cpp:14:16: warning: conversion from 'clock_t' {aka 'long int'} to 'double' may change value [-Wconversion]
   14 |     while(clock()-st<0.9*CLOCKS_PER_SEC)
      |           ~~~~~^~
boxes.cpp: In function 'int read()':
boxes.cpp:7:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | int read(){int x;scanf("%d",&x);return x;}
      |                  ~~~~~^~~~~~~~~

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