Submission #126377

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
126377	2019-07-07 14:20:20	nxteru	Robots (IOI13_robots)	C++14	100 / 100	601 ms	27504 KiB

robots

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#include "robots.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
#define F first
#define S second
#define PB push_back
ll n,m,q,x[50005],y[50005],par[50005],res[50005],s[50005],u[50005];
P g[1000005];
vector<ll>cmx,cmy;
int find(int a){
  if(par[a]==a)return a;
  return par[a]=find(par[a]);
}
void unit(int a,int b){
  par[a]=find(b);
}
bool check(int t){
  for(int i=0;i<=cmy.size();i++)par[i]=i,res[i]=0;
  for(int i=0;i<m;i++)res[y[i]]+=t;
  for(int i=0;i<=cmx.size();i++)s[i]=0,u[i]=0;
  for(int i=0;i<n;i++)u[x[i]]+=t;
  for(int i=0;i<q;i++){
    ll p=g[i].S;
    p=find(p);
    if(p==cmy.size())s[g[i].F]++;
    else{
      res[p]--;
      if(res[p]==0)unit(p,p+1);
 
 
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Compilation message (stderr)

robots.cpp: In function 'bool check(int)':
robots.cpp:20:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<=cmy.size();i++)par[i]=i,res[i]=0;
              ~^~~~~~~~~~~~
robots.cpp:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<=cmx.size();i++)s[i]=0,u[i]=0;
              ~^~~~~~~~~~~~
robots.cpp:27:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(p==cmy.size())s[g[i].F]++;
      ~^~~~~~~~~~~~

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