Submission #52802

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
52802	2018-06-26 18:59:08	KieranHorgan	Wiring (IOI17_wiring)	C++17	100 / 100	339 ms	46616 KiB

wiring

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#pragma GCC optimize("O3")
#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, m, ans;
vector<int> fullList;
unordered_map<int, bool> isRed, isBlue;
vector<vector<int>> segments;
vector<vector<int>> prefixR;
vector<vector<int>> prefixL;
int calcWire(int s, int l, int r) {
  int res = 0;
  res += prefixL[s][l];
  res += (segments[s].size()-l) * (segments[s+1][0]-segments[s].back());
  res += prefixR[s+1][r];
  res += (r+1) * (segments[s+1][0]-segments[s].back());
  res -= min((int)segments[s].size()-l, r+1)*(segments[s+1][0]-segments[s].back());
  return res;
}
int shash(int a, int b) {
  return a*1000000 + b;
}
unordered_map<int, int> dp;
long long min_total_length(vector<signed> r, vector<signed> b) {
  dp.reserve(32768); dp.max_load_factor(0.25);
 
 
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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:51:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int s = 0; s < segments.size(); s++) {
                 ~~^~~~~~~~~~~~~~~~~
wiring.cpp:53:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 1; i < segments[s].size(); i++)
                  ~~^~~~~~~~~~~~~~~~~~~~
wiring.cpp:57:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 1; i < segments[s].size(); i++)
                  ~~^~~~~~~~~~~~~~~~~~~~
wiring.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j < segments[1].size(); j++) {
                 ~~^~~~~~~~~~~~~~~~~~~~
wiring.cpp:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int s = 2; s < segments.size(); s++) {
                 ~~^~~~~~~~~~~~~~~~~
wiring.cpp:68:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < segments[s].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~~~~
wiring.cpp:72:59: warning: unused variable 'j' [-Wunused-variable]
    int lo = 1, hi = max(1ll,(int)segments[s-1].size()-1), j, m1, m2, r1, r2;
                                                           ^

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