Submission #159278

#	Time	Username	Problem	Language	Result	Execution time	Memory
159278		liwi	Cipele (COCI18_cipele)	C++11	90 / 90	60 ms	2944 KiB

cipele

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;

#define scan(x) do{while((x=getchar())<'0'); for(x-='0'; '0'<=(_=getchar()); x=(x<<3)+(x<<1)+_-'0');}while(0)
char _;
#define complete_unique(a) a.erase(unique(a.begin(),a.end()),a.end())
#define all(a) a.begin(),a.end()
#define println printf("\n");
#define readln(x) getline(cin,x);
#define pb push_back
#define endl "\n"
#define INT_INF 0x3f3f3f3f
#define LL_INF 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007
#define MOD2 1494318097
#define SEED 131
#define mp make_pair
#define fastio cin.tie(0); cin.sync_with_stdio(0);

#define MAXN 100005

typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
typedef unordered_map<int,int> umii;
typedef pair<int,int> pii;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef pair<int,pii> triple;
typedef int8_t byte;

mt19937 g1(time(0));

int randint(int a, int b){return uniform_int_distribution<int>(a, b)(g1);}
ll randlong(ll a,ll b){return uniform_int_distribution<long long>(a, b)(g1);}

ll gcd(ll a, ll b){return b == 0 ? a : gcd(b, a % b);}
ll lcm(ll a, ll b){return a*b/gcd(a,b);}
ll fpow(ll  b, ll exp, ll mod){if(exp == 0) return 1;ll t = fpow(b,exp/2,mod);if(exp&1) return t*t%mod*b%mod;return t*t%mod;}
ll divmod(ll i, ll j, ll mod){i%=mod,j%=mod;return i*fpow(j,mod-2,mod)%mod;}

int len1,len2,A[MAXN],B[MAXN];

inline bool works(int mid){
	int ptr = 1;
	for(int i=1; i<=len1; i++){
		while(ptr <= len2 && abs(A[i]-B[ptr]) > mid) ptr++;
		if(ptr == len2+1) return false;
		ptr++;
	}
	return true;
}

int main(){
	scanf("%d %d",&len1,&len2);
	for(int i=1; i<=len1; i++)
		scanf(" %d",&A[i]);
	for(int i=1; i<=len2; i++)
		scanf(" %d",&B[i]);
	if(len1 > len2){
		swap(len1,len2);
		swap(A,B);
	}
	sort(A+1,A+len1+1);
	sort(B+1,B+len2+1);
	int low = 0, high = 1e9, ans = 1e9;
	while(low <= high){
		int mid = (low+high)/2;
		if(works(mid)){
			ans = mid;
			high = mid-1;
		}else low = mid+1;
	}
	printf("%d\n",ans);
}

Compilation message (stderr)

cipele.cpp: In function 'int main()':
cipele.cpp:60:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&len1,&len2);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
cipele.cpp:62:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %d",&A[i]);
   ~~~~~^~~~~~~~~~~~~
cipele.cpp:64:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf(" %d",&B[i]);
   ~~~~~^~~~~~~~~~~~~

• 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