oj.uz

Submission #1086183

# Submission time Handle Problem Language Result Execution time Memory
1086183 2024-09-09T16:54:44 Z Hadi_Alhamed Palembang Bridges (APIO15_bridge) C++17
22 / 100
 43 ms 7884 KB 
// to live is to die
#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 long long int ll;
typedef unsigned long long ull;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<long long> vl;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpl;
#define Clear(a, n)              \
  for (int i = 0; i <= n; i++) { \
    a[i] = 0;                    \
  }
#define clearMat(a, n, m, d)                  \
  for (int i = 0; i <= n; i++) {              \
    for (int j = 0; j <= m; j++) a[i][j] = d; \
  }
#define YES cout << "YES\n"
#define NO cout << "NO\n"
#define PB push_back
#define PF push_front
#define MP make_pair
#define F first
#define S second
#define rep(i, n) for (int i = 0; i < n; i++)
#define repe(i, j, n) for (int i = j; i < n; i++)
#define SQ(a) (a) * (a)
#define rep1(i, n) for (int i = 1; i <= n; i++)
#define Rrep(i, start, finish) for (int i = start; start >= finish; i--)

#define forn(i, Start, End, step) for (int i = Start; i <= End; i += step)
#define rforn(i, Start, End, step) for (int i = Start; i >= End; i -= step)
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
// ll arr[SIZE];
/*
how to find n % mod ; n < 0?
x = (n+mod)%mod
if(x < 0) x += mod;
*/
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }

template <typename T, typename V>
void __print(const pair<T, V> &x) {
  cerr << '{';
  __print(x.first);
  cerr << ',';
  __print(x.second);
  cerr << '}';
}
template <typename T>
void __print(const T &x) {
  int f = 0;
  cerr << '{';
  for (auto &i : x) cerr << (f++ ? "," : ""), __print(i);
  cerr << "}";
}
void _print() { cerr << "]\n"; }
template <typename T, typename... V>
void _print(T t, V... v) {
  __print(t);
  if (sizeof...(v)) cerr << ", ";
  _print(v...);
}
#ifndef ONLINE_JUDGE
#define db(x...)                \
  cerr << "[" << #x << "] = ["; \
  _print(x)
#else
#define db(x...)
#endif

// order_of_key(k): # of elements less than k (which is the index of x = k)
// find_by_order(k); iterator of the k-th element

template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag,
                              tree_order_statistics_node_update>;
template <class T>
bool ckmin(T &a, const T &b) {
  return b < a ? a = b, 1 : 0;
}
template <class T>
bool ckmax(T &a, const T &b) {
  return a < b ? a = b, 1 : 0;
}
template <typename T>
istream &operator>>(istream &in, vector<T> &a) {
  for (auto &x : a) in >> x;
  return in;
};
template <typename T>
ostream &operator<<(ostream &out, vector<T> &a) {
  for (auto &x : a) out << x << ' ';
  return out;
};

// priority_queue<data type , the container that would hold the values ,
// greater<pair<int,int>>> greater means that we want the smallest value on top
// less means that we want the largest
// x ^ (n) mod m = ( (x mod m)^(n) ) mod m

ll const MAX = 1e18 + 1;
ll const oo = 3e18 + 1;
ll const INF = 1e9 + 10;
const ll MOD = 1e9 + 7;
ll const SIZE = 2e5 + 900;
const int LOG = 20;

template <typename T, typename T2>
T add(T X, T2 Y) {
  X += Y;
  if (X >= MOD) {
    X -= MOD;
  }
  return X;
}
template <typename T, typename T2>

T sub(T X, T2 Y) {
  X -= Y;
  if (X < 0) X += MOD;
  return X;
}

template <typename T, typename T2>
T mult(T X, T2 Y) {
  return (X % MOD) * (Y % MOD) % MOD;
}

void setIO(string s) {
  freopen((s + ".in").c_str(), "r", stdin);
  freopen((s + ".out").c_str(), "w", stdout);
}

// bool operator <s (const type & obj1 , const type & obj2){....}




void solve()
{
	
	int K , N;
	cin >> K >> N;
	ll same = 0 , sumL{} , sumR{};
	priority_queue<ll>L;
	priority_queue<ll , vector<ll> , greater<ll>>R;
	vpl V = {{0 , 0}};
	rep(i , N)
	{
		char a , b ;
		ll s , t;
		cin >> a >> s >> b >> t;
		if(a == b)
		{
			same += abs(s - t);
		}else{
			V.PB({s , t});
		}
	}	
	//find median of All Ts and Ss
	auto handle_insert = [&](ll X)->void
	{
		ll mid = L.empty() ? oo : L.top();
		if(X <= mid)
		{
			L.push(X);
			sumL += X;
		}else{
			R.push(X);
			sumR += X;
		}
		if(R.size() + 1 < L.size())
		{
			ll x = L.top();
			L.pop();
			R.push(x);
			sumR += x;
			sumL -= x;
		}else if(L.size() < R.size())
		{
			ll x = R.top();
			R.pop();
			L.push(x);
			sumR -= x;
			sumL += x;
		}
	};
	sort(all(V) , [&](pl p1 , pl p2)->bool
	{
		return p1.F + p1.S < p2.F + p2.S;
	});
	ll answer = same + V.size() - 1;
	vl pref(N + 10);
	int _N = (int)V.size() - 1;
	for(int i = 1; i <= _N ; i ++)
	{
		handle_insert(V[i].F);
		handle_insert(V[i].S);
		pref[i] = sumR - sumL;
	}
	answer += pref[_N];
	if(K == 2)
	{
		while(R.size())R.pop();
		while(L.size())L.pop();
		sumL = 0 ; sumR = 0;
		for(int i = _N ; i >= 1 ; i--)
		{
			handle_insert(V[i].F);
			handle_insert(V[i].S);
			answer = min(answer , sumR - sumL + pref[i - 1]);
		}
	}
	cout << answer << "\n";	
		
		
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int T = 1;
	// setIO("hayfeast");
	// cin >> T;
	while (T--) {
		solve();
	}
	return 0;
}

Compilation message

bridge.cpp: In function 'void setIO(std::string)':
bridge.cpp:154:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  154 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bridge.cpp:155:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  155 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 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 344 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 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 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 1 ms 348 KB Output is correct
12 Correct 25 ms 6496 KB Output is correct
13 Correct 39 ms 7808 KB Output is correct
14 Correct 33 ms 7620 KB Output is correct
15 Correct 24 ms 5072 KB Output is correct
16 Correct 32 ms 6996 KB Output is correct
17 Correct 43 ms 7884 KB Output is correct
18 Correct 30 ms 7880 KB Output is correct
19 Correct 34 ms 7840 KB Output is correct
20 Correct 24 ms 7636 KB Output is correct
21 Correct 32 ms 7632 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Incorrect 1 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -