Submission #309990

#	Time	Username	Problem	Language	Result	Execution time	Memory
309990		juggernaut	Robots (IOI13_robots)	C++14	0 / 100	1674 ms	12708 KiB

robots

#include"robots.h"
#include<bits/stdc++.h>
#define fr first
#define sc second
//#include"grader.c"
using namespace std;
int a,b,t,x[50005],y[50005];
pair<int,int>toy[1000005];
inline bool check(int m){
    priority_queue<int>q;
    for(int i=0,tt=0;i<=a;i++){
        for(;tt<t&&toy[tt].fr<x[i];tt++)q.push(toy[tt].sc);
        if(i!=a)for(int j=0;j<m&&(!q.empty());j++)q.pop();
    }
    for(int i=b-1;i>=0&&(q.empty()||q.top()<y[i]);i--)
        for(int j=0;j<m&&(!q.empty());j++)q.pop();
    return q.empty();
}
int putaway(int A,int B,int T,int X[],int Y[],int W[],int S[]){
    a=A,b=B,t=T;
    x[a]=2e9+1;
     memcpy(x,X,sizeof(X));
  memcpy(y,Y,sizeof(Y));
    for(int i=0;i<t;i++)toy[i]={W[i],S[i]};
    sort(x,x+a);
    sort(y,y+b);
    sort(toy,toy+t);
    int l=1,r=t;
    while(l<r){
        int mid=(l+r)>>1;
        if(check(mid))r=mid;
        else l=mid+1;
    }
    if(!check(l))return -1;
    return l;
}

Compilation message (stderr)

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:22:25: warning: 'sizeof' on array function parameter 'X' will return size of 'int*' [-Wsizeof-array-argument]
   22 |      memcpy(x,X,sizeof(X));
      |                         ^
robots.cpp:19:35: note: declared here
   19 | int putaway(int A,int B,int T,int X[],int Y[],int W[],int S[]){
      |                               ~~~~^~~
robots.cpp:22:17: warning: argument to 'sizeof' in 'void* memcpy(void*, const void*, size_t)' call is the same expression as the source; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
   22 |      memcpy(x,X,sizeof(X));
      |                 ^~~~~~~~~
robots.cpp:23:22: warning: 'sizeof' on array function parameter 'Y' will return size of 'int*' [-Wsizeof-array-argument]
   23 |   memcpy(y,Y,sizeof(Y));
      |                      ^
robots.cpp:19:43: note: declared here
   19 | int putaway(int A,int B,int T,int X[],int Y[],int W[],int S[]){
      |                                       ~~~~^~~
robots.cpp:23:14: warning: argument to 'sizeof' in 'void* memcpy(void*, const void*, size_t)' call is the same expression as the source; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
   23 |   memcpy(y,Y,sizeof(Y));
      |              ^~~~~~~~~

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 25
• Subtask 4: 0 / 37
• Subtask 5: 0 / 10