oj.uz

Submission #964509

# Submission time Handle Problem Language Result Execution time Memory
964509 2024-04-17T04:33:43 Z GrindMachine Towns (IOI15_towns) C++17
25 / 100
 19 ms 1032 KB 
#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;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 110 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "towns.h"

int dis[N][N];

int f(int u, int v){
	if(u > v) swap(u,v);
	if(dis[u][v] != -1) return dis[u][v];
	return dis[u][v] = getDistance(u,v);
}

int hubDistance(int n, int sub) {
	memset(dis,-1,sizeof dis);

	pii mx = {-1,-1};
	rep1(i,n-1){
		pii px = {f(0,i),i};
		amax(mx,px);
	}

	int s = mx.ss;
	mx = {-1,-1};

	rep(i,n){
		if(i == s) conts;
		pii px = {f(s,i),i};
		amax(mx,px);
	}

	auto [diam,t] = mx;
	int ans = inf1;

	rep(i,n){
		if(i == s or i == t) conts;
		int d1 = f(s,i), d2 = f(t,i);
		int d = d1+d2;
		assert(d >= diam);
		int x = (d-diam)/2;
		d1 -= x, d2 -= x;
		amin(ans,max(d1,d2));
	}

	return ans;
}

Compilation message

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:70:28: warning: unused parameter 'sub' [-Wunused-parameter]
   70 | int hubDistance(int n, int sub) {
      |                        ~~~~^~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 344 KB Output is correct
2 Correct 10 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 19 ms 532 KB Output is correct
5 Correct 14 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 348 KB Output is correct
2 Correct 9 ms 900 KB Output is correct
3 Correct 12 ms 1032 KB Output is correct
4 Correct 12 ms 860 KB Output is correct

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 536 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 39.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -