Submission #50275

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
50275	2018-06-09 02:41:58	tmwilliamlin168	Wiring (IOI17_wiring)	C++14	100 / 100	74 ms	7676 KiB

wiring

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#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define fi first
#define se second
const int mxN=1e5;
const ll INF=1e18;
ll p[2*mxN], ps[2*mxN+1], dp[2*mxN+1], mn1[mxN+1]={INF};
ll min_total_length(vector<int> r, vector<int> b) {
  int n=r.size()+b.size();
  vector<pii> cls;
  for(int i=0, ri=0, bi=0, lc=-1, cc; i<n; ++i, lc=cc) {
    if(ri>=r.size()||bi<b.size()&&b[bi]<r[ri]) {
      p[i]=b[bi++];
      cc=0;
    } else {
      p[i]=r[ri++];
      cc=1;
    }
    ps[i+1]=p[i]+ps[i];
    if(cc!=lc)
      cls.push_back({i, i});
    else
      ++cls.back().se;
  }
 
 
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Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:18:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(ri>=r.size()||bi<b.size()&&b[bi]<r[ri]) {
      ~~^~~~~~~~~~
wiring.cpp:18:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(ri>=r.size()||bi<b.size()&&b[bi]<r[ri]) {
                    ~~^~~~~~~~~
wiring.cpp:18:31: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   if(ri>=r.size()||bi<b.size()&&b[bi]<r[ri]) {
wiring.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int bi=0; bi<cls.size()-1; ++bi) {
                ~~^~~~~~~~~~~~~

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