Submission #632330

#	Time	Username	Problem	Language	Result	Execution time	Memory
632330		ggoh	Languages (IOI10_languages)	C++14	78 / 100	5460 ms	128212 KiB

lang

#include<bits/stdc++.h>
#include "grader.h"
using namespace std;
typedef long long lint;
int V[56][65536];
map<lint,int>W[56];
void excerpt(int *E)
{
  int l=0,maxi=0,maxind;
  int e[65536]={};
  for(int i=0;i<100;i++)
  {
    e[E[i]]++;
    if(e[E[i]]>maxi)
    {
      maxi=e[E[i]];
      maxind=E[i];
    }
  }
  maxi=0;
  vector<lint>T;
  for(int i=0;i<99;i++)
  {
    if(E[i]!=maxind && E[i+1]!=maxind)
      T.push_back(1ll*E[i]*65536+E[i+1]);
  }
  sort(T.begin(),T.end());
  T.erase(unique(T.begin(),T.end()),T.end());
  for(int j=0;j<56;j++)
  {
    int kind=0;
    for(auto &i:T)
    {
      if(W[j][i])kind++;
    }
    if(kind>maxi)
    {
      maxi=kind;
      l=j;
    }
  }
  
  if(maxi==0)
  {
    vector<int>S;
    for(int i=0;i<100;i++)if(E[i]!=maxind)S.push_back(E[i]);
    sort(S.begin(),S.end());
    S.erase(unique(S.begin(),S.end()),S.end());
    maxi=-1;
    for(int j=0;j<56;j++)
    {
      int kind=0;
      for(auto &i:S)
      {
        if(V[j][i])kind++;
      }
      if(kind>maxi)
      {
        maxi=kind;
        l=j;
      }
    }
  }
  /*
  vector<int>N;
  for(int j=0;j<56;j++)
  {
    int kind=0;
    for(int i=0;i<100;i++)
    {
      if(V[j][E[i]])
      {
        kind++;
      }
    }
    if(kind==maxi)
    {
      N.push_back(j);
    }
  }
  srand(time(NULL));
  int r=rand();
  r%=(int)(N.size());
  l=N[r];*/
  
  int L=language(l);
  for(int i=0;i<100;i++)
  {
    if(E[i]!=maxind)V[L][E[i]]++;
  }
  for(int i=0;i<99;i++)
  {
    if(E[i]!=maxind && E[i+1]!=maxind)W[L][1ll*E[i]*65536+E[i+1]]++;
  }
}

Compilation message (stderr)

lang.cpp: In function 'void excerpt(int*)':
lang.cpp:93:21: warning: 'maxind' may be used uninitialized in this function [-Wmaybe-uninitialized]
   93 |     if(E[i]!=maxind && E[i+1]!=maxind)W[L][1ll*E[i]*65536+E[i+1]]++;
      |        ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 48 / 80