Submission #1185963

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185963		countless	Wiring (IOI17_wiring)	C++20	Compilation error	0 ms	0 KiB

wiring

#include "wiring.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;

const ll MOD = 998244353;
const ll INF = 1e18+5;
const ld EPS = 1e-12;

#define endl "\n"
#define sp <<" "<<
#define REP(i, a, b) for(ll i = a; i < b; i++)
#define dbg(x) cout << #x << " = " << x << endl
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define fast_io() ios_base::sync_with_stdio(false); cin.tie(NULL)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())

struct custom_hash {
	static uint64_t splitmix64(uint64_t x) {
		// http://xorshift.di.unimi.it/splitmix64.c
		x += 0x9e3779b97f4a7c15;
		x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
		x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
		return x ^ (x >> 31);
	}

	size_t operator()(uint64_t x) const {
		static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
		return splitmix64(x + FIXED_RANDOM);
	}
};

template <typename Key, typename Value>
using hash_map = unordered_map<Key, Value, custom_hash>;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
// uniform_int_distribution<int>(a, b)(rng);
// shuffle(all(a), rng);

const int MAXN = 1e5;

long long min_total_length(vector<int> r, vector<int> s) {
	int n = r.size(), m = s.size(), t = n + m;

	auto cost = [&](ll i, ll j) -> ll {
		i--, j--;
		return abs(r[i] - s[j]);
	};

	vector<vector<ll>> dp(n+1, vector<ll>(m+1, INF));
	dp[0][0] = 0;

	function<ll(ll, ll)> perf = [&](ll i, ll j) -> ll {
		if (dp[i][j] != INF)
			return dp[i][j];

		if (i == 0 or j == 0)
			return INF;

		ll c = cost(i, j);
		
		if (i > 0) dp[i][j] = min(dp[i][j], perf(i-1, j) + c);
		if (j > 0) dp[i][j] = min(dp[i][j], perf(i, j-1) + c);
		if (i > 0 and j > 0) dp[i][j] = min(dp[i][j], perf(i-1, j-1) + c);

		return dp[i][j];
	};

	REP(i, 1, n+1) {
		REP(j, 1, m+1) {
			perf(i, j);
		}
	}

	REP(i, 0, n+1) {
		REP(j, 0, m+1) {
			// cerr << i sp j sp dp[i][j] << endl;
		}
	}

	return dp[n][m];
}

signed main() {
	int n, m; cin >> n >> m;
	vector<int> a(n), b(m);
	REP(i, 0, n)
		cin >> a[i];
	REP(i, 0, m)
		cin >> b[i];

	cout << min_total_length(a, b);
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccJY8pHa.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccRb7c7N.o:wiring.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status