oj.uz

답안 #937472

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
937472 2024-03-04T06:30:08 Z Baizho Palembang Bridges (APIO15_bridge) C++14
22 / 100
 45 ms 2388 KB 
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
  
#define ordered_set tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
 
// #pragma GCC optimize("Ofast,unroll-loops,fast-math")
// #pragma GCC target("popcnt,sse3,avx")
 
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> pll;
 
#define sz size()
#define ff first
#define ss second
#define all(a) a.begin(),a.end()
#define pb push_back
 
const int mod = ll(1e9)+7; //(b + (a%b)) % b (to mod -1%(10^9+7) correctly in c++ its -1 but its suppose to be 10^9+6
const ll MOD = 998244353;  // (a%mod)*(binpow(b,mod-2,mod) = (a/b)%mod
const int N = ll(2e5)+100;
const int M = ll(2e5) + 100;
const long long inf = 5e18;
//const long double eps = 1e-15L;
 
ll lcm(ll a, ll b) { return (a / __gcd(a,b))*b; }
 
ll binpow(ll a, ll b, ll m) { ll res=1; a %= m; while(b>0){ if(b&1)res=(res * a) % m; a=(a * a) % m; b/=2; } return res%m;}
 
void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
 
int k, n, m;
pair<int, int> point[N];

bool cmp(pair<int, int> a, pair<int, int> b) {
	return (a.ff + a.ss) < (b.ff + b.ss);
}

vector<int> get(int l, int r) {
	vector<int> res;
	for(int i = l; i <= r; i ++) res.pb(point[i].ff), res.pb(point[i].ss);
	sort(all(res));
	return res;
}
 
void Baizho() {
	cin>>k>>n;
	long long ex = 0;
	for(int i = 1; i <= n; i ++) {
		char p, q;
		int s, t; 
		cin>>p>>s>>q>>t;
		if(s > t) swap(s, t);
		if(p == q) ex += t - s;
		else {
			ex ++;
			point[++m] = {s, t};
		}
	}
	sort(point + 1, point + m + 1, cmp);
	long long ans = 0;
	if(k == 1) {
		vector<int> pos = get(1, m);
		int mid = (pos.size() - 1) / 2;
		for(auto x : pos) ans += abs(pos[mid] - x);
	} else {
		ans = inf;
		for(int i = 1; i < m; i ++) {
			vector<int> pos1 = get(1, i), pos2 = get(i + 1, m);
			int mid1 = (pos1.size() - 1) / 2, mid2 = (pos2.size() - 1) / 2;
			long long res = 0;
			for(auto x : pos1) res += abs(pos1[mid1] - x);
			for(auto x : pos2) res += abs(pos2[mid2] - x);
			ans = min(ans, res);
		}
	}
	cout<<ans + ex;
}
 
signed main() {		
// 	Freopen("nondec");
    ios_base::sync_with_stdio(false);   
    cin.tie(0);cout.tie(0); 
//   	precalc();
   	
    int ttt = 1;
//    cin>>ttt;
 
    for(int i=1; i<=ttt; i++) {Baizho(); }
}

Compilation message

bridge.cpp: In function 'void Freopen(std::string)':
bridge.cpp:35:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                           ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:35:76: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 | void Freopen(string Key){ freopen((Key+".in").c_str(), "r", stdin); freopen((Key+".out").c_str(), "w", stdout); }
      |                                                                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 18 ms 2360 KB Output is correct
13 Correct 45 ms 2268 KB Output is correct
14 Correct 29 ms 2260 KB Output is correct
15 Correct 22 ms 1540 KB Output is correct
16 Correct 20 ms 2268 KB Output is correct
17 Correct 24 ms 2176 KB Output is correct
18 Correct 26 ms 2296 KB Output is correct
19 Correct 29 ms 2264 KB Output is correct
20 Correct 24 ms 2268 KB Output is correct
21 Correct 28 ms 2388 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 548 KB Output isn't correct
2 Halted 0 ms 0 KB -