Submission #163601

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
163601	2019-11-14T09:46:25 Z	Knps4422	Boxes with souvenirs (IOI15_boxes)	C++14	Compilation error	0 ms	0 KB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
#define ll long long 
#define fr first
#define sc second
#define pb push_back
using namespace std;

ll n, L;
ll pos[1000005];
ll cl[1000005], ct[1000005];
ll mid_of_circle;
void find1(){
	int l = 1 , r = n;
	int mid = (l+r)/2;
	while(l < r){
		mid = (l+r)/2; 
		if(pos[mid] >= L/2){
			r = mid;
		}else{
			l = mid+1;
		}
	}
	// l is the first position after the middle of the circle
	mid_of_circle = l;
}
int delivery(int n1,int k,int L1,int ps[]){
	n = n1;
	L = L1;
	for(int i = 1; i <= n ; i++){
		pos[i] = ps[i-1];
	}
	// cl[i] - result if we take only the first i positions
	for(ll i = 1; i <= n ; i++){
		cl[i] = cl[max((ll)0,i-k)] + 2*pos[i];
	}
	// ct[i] - result if we take only the last positions from i to n
	for(ll i = n; i > 0 ; i--){
		ct[i] = ct[min(n+1,i+k)] + 2*(L - pos[i]);
	}
	find1();
	ll rez = 1e18+7;
	for(ll i = 0 ; i < mid_of_circle ; i++){
		ll new_rez; 
		for(ll j = 0; i + k*j <= n ; j++){
			if(i + k*j + 1 >= mid_of_circle){
				new_rez = cl[i] + j*L + ct[i + k*j + 1];
				rez = min(rez,new_rez);
			}
		}
	}
	cout << rez << '\n';
}

Compilation message

boxes.cpp: In function 'void find1()':
boxes.cpp:14:18: warning: conversion to 'int' from 'long long int' may alter its value [-Wconversion]
  int l = 1 , r = n;
                  ^
boxes.cpp: In function 'int delivery(int, int, int, int*)':
boxes.cpp:27:5: error: ambiguating new declaration of 'int delivery(int, int, int, int*)'
 int delivery(int n1,int k,int L1,int ps[]){
     ^~~~~~~~
In file included from boxes.cpp:2:0:
boxes.h:4:11: note: old declaration 'long long int delivery(int, int, int, int*)'
 long long delivery(int N, int K, int L, int p[]);
           ^~~~~~~~
boxes.cpp:53:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^