Submission #636969

#	Time	Username	Problem	Language	Result	Execution time	Memory
636969		HeyYouNotYouYou	Cipele (COCI18_cipele)	C++14	90 / 90	46 ms	4412 KiB

cipele

#include <bits/stdc++.h>
#define int long long
#define endl '\n'
#define fast ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define all(v) v.begin(),v.end()
using namespace std;
const int N = 100001 , MOD = 1e9+7;
const double EPS=1e-10, PI=3.141592653589793238462643383279502;
vector<int>a,b;
bool fun(int k)
{
    int j = 0;
    for(int i = 0 ; i < a.size() ; i ++)
    {
        while(j<b.size() && a[i]-k>b[j]) j++;
        if(j==b.size() || a[i]+k<b[j]) return 0;
        j++;
    }
    return 1;

}
int32_t main()
{
    //freopen("abc.in", "r", stdin);
    fast;
    int n,m,x;
    cin>>n>>m;
    for(int i = 0 ; i < n ; i ++) cin>>x,a.push_back(x);
    for(int i = 0 ; i < m ; i ++) cin>>x,b.push_back(x);
    sort(all(a));
    sort(all(b));
    if(a.size()>b.size()) swap(a,b);
    int l = 0 , r = 1e9 , ans=0;
    while(l<=r){
        int mid=(l+r)/2;
        if(fun(mid)){
            ans=mid;
            r=mid-1;
        }
        else l=mid+1;
    }
    cout<<ans;
}

Compilation message (stderr)

cipele.cpp: In function 'bool fun(long long int)':
cipele.cpp:13:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i = 0 ; i < a.size() ; i ++)
      |                     ~~^~~~~~~~~~
cipele.cpp:15:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         while(j<b.size() && a[i]-k>b[j]) j++;
      |               ~^~~~~~~~~
cipele.cpp:16:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |         if(j==b.size() || a[i]+k<b[j]) return 0;
      |            ~^~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9