Submission #136632

#	Time	Username	Problem	Language	Result	Execution time	Memory
136632		DanerZein	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	260 ms	166424 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
#define MAX 1000000000
using namespace std;
long long dp[100][100000];
long long dist[100][100];
long long l,tam;
long long tsp(){
  for(int mask=0;mask<(1<<tam);mask++){
    for(int i=0;i<tam;i++){
      if(mask==(1<<i)){
	  dp[i][mask]=0;
      }
	else{
          if(mask&(1<<i)){
    	     dp[i][mask]=MAX;
	     for(int j=0;j<tam;j++){
	       int newmask=mask^(1<<i);
	       if(newmask&(1<<j))
	       dp[i][mask]=min(dp[i][mask],dist[i][j]+dp[j][newmask]);
	     }
	  }
	}
    }
  }
    long long r=MAX;
    for(int i=0;i<tam;i++){
      r=min(r,dp[i][(1<<tam)-1]);
    }
      return r;
}
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
   tam=s.size();
  for(int i=0;i<s.size();i++){
    for(int j=i+1;j<s.size();j++){
      int r1=t[i]-s[j];
      int r2=t[j]-s[i];
      // cout<<t[i]<<" "<<s[j]<<" "<<t[j]<<" "<<s[i]<<endl;
      r1=max(r1,0);
      r2=max(r2,0);
      dist[i][j]=r1;
      dist[j][i]=r2;
    }
  }
  long long r=tsp();
  /*for(int i=0;i<tam;i++){
    for(int j=0;j<(1<<tam);j++){
      cout<<dp[i][j]<<" ";
    }
    cout<<endl;
  }*/
  return r;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<s.size();i++){
               ~^~~~~~~~~
railroad.cpp:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int j=i+1;j<s.size();j++){
                   ~^~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36