Submission #1112607

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112607		SalihSahin	Wiring (IOI17_wiring)	C++14	0 / 100	1082 ms	262144 KiB

wiring

#include <bits/stdc++.h>
#define pb push_back
using namespace std;
#include "wiring.h"

const long long inf = 1e17;
 
long long min_total_length(vector<int> r, vector<int> b) {
   int n = r.size(), m = b.size();
   vector<long long> mndisr(n), mndisb(m);
   int indb = 0, indr = 0;
   for(int i = 0; i < n; i++){
      while(indb + 1 < m && b[indb+1] < r[i]) indb++;
      mndisr[i] = min((long long)abs(r[i] - b[indb]), (indb + 1 < m ? (long long)abs(r[i] - b[indb+1]) : inf));
   }
 
   for(int i = 0; i < m; i++){
      while(indr + 1 < n && r[indr+1] < b[i]) indr++;
      mndisb[i] = min((long long)abs(b[i] - r[indr]), (indr + 1 < n ? (long long)abs(b[i] - r[indr+1]) : inf));
   }

   vector<int> adj[n];
   indb = 0;
   for(int i = 0; i < n; i++){
      while(indb + 1 < m && b[indb+1] < r[i]) indb++;
      for(int j = indb; j >= 0; j--){
         if(mndisr[i] + mndisb[j] < r[i] - b[j]) continue;
         adj[i].pb(j);
      }
      for(int j = indb + 1; j < m; j++){
         if(mndisr[i] + mndisb[j] < b[j] - r[i]) continue;
         adj[i].pb(j);
      }
   }
 
   vector<vector<long long> > dp(n+1, vector<long long>(m+1, inf));
   dp[0][0] = 0;
   for(int i = 0; i <= n; i++){
      if(i < n) dp[i+1][0] = dp[i][0] + mndisr[i];
      for(int j = 0; j <= m; j++){
         //if(i < n) dp[i+1][j] = min(dp[i+1][j], dp[i][j] + mndisr[i]);
         if(j < m) dp[i][j+1] = min(dp[i][j+1], dp[i][j] + mndisb[j]);
      }

      if(i < n){
         for(auto itr: adj[i]){
            dp[i + 1][itr + 1] = min(dp[i + 1][itr + 1], dp[i][itr] + abs(r[i] - b[itr]));
         }
      }
   }
 
   return dp[n][m];
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45