Submission #57760

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
57760	2018-07-16 02:48:01	spencercompton	Sparklers (JOI17_sparklers)	C++17	100 / 100	212 ms	31820 KiB

sparklers

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n, k;
ll t;
bool v[1001][1001];
ll pos[1001];
// ll dp[2][1000][1000];
// ll pos[1000];
vector<ll> all;
int main(){
  ll tt;
  cin >> n >> k >> tt;
  for(int i = 0; i<n; i++){
    cin >> pos[i];
  }
  k--;
  ll low = 0LL;
  ll high = 1000000000LL;
  while(low<high){
    ll mid = (low+high)/2LL;
    t = mid*tt;
    vector<ll> ar[2];
    for(int i = 0; i<2; i++){
      ar[i].push_back(0);
    }
    for(int i = k+1; i<n; i++){
      ar[0].push_back(ar[0][ar[0].size()-1] + 2LL * t - (pos[i]-pos[i-1]));
    }
    for(int i = k-1; i>=0; i--){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

sparklers.cpp: In function 'int main()':
sparklers.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j = 1; j<ar[i].size(); j++){
                   ~^~~~~~~~~~~~~
sparklers.cpp:81:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(p1+1<f[0].size() || p2+1<f[1].size()){
         ~~~~^~~~~~~~~~~~
sparklers.cpp:81:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(p1+1<f[0].size() || p2+1<f[1].size()){
                             ~~~~^~~~~~~~~~~~
sparklers.cpp:82:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(p1+1<f[0].size() && ar[1][f[1][p2].first] + f[0][p1].second >=0LL){
       ~~~~^~~~~~~~~~~~
sparklers.cpp:85:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    else if(p2+1<f[1].size() && ar[0][f[0][p1].first] + f[1][p2].second >= 0LL){
            ~~~~^~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20
• Subtask 3: 50 / 50