oj.uz

Submission #1097460

# Submission time Handle Problem Language Result Execution time Memory
1097460 2024-10-07T12:36:31 Z coolsentenceidontremember Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 734 ms 117652 KB 
/*


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*/



#include"bits/stdc++.h"
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define ld long double
#define ff first
#define ss second
#define pii pair<int, int>
#define mp make_pair
#define make_rng mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define make_rng64 mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
using namespace std;

void setIO(string s = ""){
 ios_base::sync_with_stdio(false);
 cin.tie(nullptr);
 cout.tie(nullptr);
 if (!s.empty()){
	freopen((s+".in").c_str(), "r", stdin);
	freopen((s+".out").c_str(), "w", stdout);
	}
}

const double PI = acos(-1);

struct chash{
	const uint64_t C = uint64_t(2e18 * PI) + 71;
	const uint32_t random = chrono::steady_clock::now().time_since_epoch().count();
	size_t operator()(uint64_t x) const {
		return __builtin_bswap64((x^random)*C);
	}
};


const ll inf = 1e18;
int cnt[100000];
vector<pair<int, ll>> adj[100000];
ll dis[100000];

ll travel_plan(int n, int m, int r[][2], int l[], int k, int p[]){
	setIO();
	for (int i = 0; i <= m; i++){
		int u = r[i][0], v = r[i][1];
		ll w = l[i];
		adj[u].push_back(mp(v, w));
		adj[v].push_back(mp(u, w));
	}
	memset(cnt, 0, sizeof cnt);
	fill(dis, dis+n, inf);
	priority_queue<pair<ll, int>> pq;
	for (int i = 0; i < k; i++){
		cnt[p[i]] = 1;
		pq.push(mp(0LL, p[i]));
	}
	while (!pq.empty()){
		pair<ll, int> p = pq.top();
		pq.pop();
		if (dis[p.ss] != inf) continue;
		int u = p.ss;
		cnt[u]++;
		if (cnt[u] == 2){
			dis[u] = -p.ff;
			for (const auto &[v, w] : adj[u]){
				pq.push(mp(p.ff - w, v));
			}
		}
	}
	return dis[0];
	
}

Compilation message

crocodile.cpp: In function 'void setIO(std::string)':
crocodile.cpp:140:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |  freopen((s+".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp:141:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  141 |  freopen((s+".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3160 KB Output is correct
2 Correct 1 ms 3164 KB Output is correct
3 Correct 2 ms 3164 KB Output is correct
4 Correct 2 ms 3164 KB Output is correct
5 Correct 2 ms 3164 KB Output is correct
6 Correct 2 ms 3164 KB Output is correct
7 Correct 2 ms 3164 KB Output is correct
8 Correct 2 ms 3160 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3160 KB Output is correct
2 Correct 1 ms 3164 KB Output is correct
3 Correct 2 ms 3164 KB Output is correct
4 Correct 2 ms 3164 KB Output is correct
5 Correct 2 ms 3164 KB Output is correct
6 Correct 2 ms 3164 KB Output is correct
7 Correct 2 ms 3164 KB Output is correct
8 Correct 2 ms 3160 KB Output is correct
9 Correct 4 ms 3932 KB Output is correct
10 Correct 2 ms 3164 KB Output is correct
11 Correct 2 ms 3420 KB Output is correct
12 Correct 6 ms 4568 KB Output is correct
13 Correct 5 ms 4568 KB Output is correct
14 Correct 2 ms 3164 KB Output is correct
15 Correct 2 ms 3164 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3160 KB Output is correct
2 Correct 1 ms 3164 KB Output is correct
3 Correct 2 ms 3164 KB Output is correct
4 Correct 2 ms 3164 KB Output is correct
5 Correct 2 ms 3164 KB Output is correct
6 Correct 2 ms 3164 KB Output is correct
7 Correct 2 ms 3164 KB Output is correct
8 Correct 2 ms 3160 KB Output is correct
9 Correct 4 ms 3932 KB Output is correct
10 Correct 2 ms 3164 KB Output is correct
11 Correct 2 ms 3420 KB Output is correct
12 Correct 6 ms 4568 KB Output is correct
13 Correct 5 ms 4568 KB Output is correct
14 Correct 2 ms 3164 KB Output is correct
15 Correct 2 ms 3164 KB Output is correct
16 Correct 697 ms 113816 KB Output is correct
17 Correct 61 ms 17452 KB Output is correct
18 Correct 84 ms 19796 KB Output is correct
19 Correct 734 ms 117652 KB Output is correct
20 Correct 478 ms 101528 KB Output is correct
21 Correct 32 ms 10064 KB Output is correct
22 Correct 417 ms 65340 KB Output is correct