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Submission #961554

# Submission time Handle Problem Language Result Execution time Memory
961554 2024-04-12T08:01:30 Z vjudge1 City Mapping (NOI18_citymapping) C++17
25 / 100
 17 ms 9820 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"

const int maxn = 1e3 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e9 + 100;
const int MOD = 1e9 + 7;
const int maxl = 30;
const int P = 31;

long long get_distance(int X, int Y);

int n;
ll d[maxn][maxn];
vector<pii> ans;
int r;

void calc(vector<int> v){
	random_shuffle(v.begin(), v.end());
	random_shuffle(v.begin(), v.end());
	random_shuffle(v.begin(), v.end());
	random_shuffle(v.begin(), v.end());
	r = v[0];
	for(int i: v){
		if(i != r) d[r][i] = get_distance(r, i);
	}
	sort(v.begin(), v.end(), [](int i, int j){
		return d[r][i] < d[r][j];
	});
	vector<vector<int>> to;
	for(int i: v){
		if(i == r) continue;
		bool ok = 1;
		for(int j = 0; j < to.size(); j++){
			if(j == 2 || d[r][to[j][0]] + get_distance(to[j][0], i) == d[r][i]){
				to[j].push_back(i);
				ok = 0; break;
			}
		}
		if(ok) to.push_back({i});
	}
	for(auto s: to){
		ans.push_back({r, s[0]});
	}
	for(auto s: to){
		calc(s);
	}
}

void find_roads(int N, int Q, int A[], int B[], int W[]){
	srand(time(0));
	n = N;
	vector<int> v;
	for(int i = 1; i <= n; i++){
		v.push_back(i);
	}
	calc(v);
	for(int i = 0; i < n - 1; i++){
		A[i] = ans[i].first;
		B[i] = ans[i].second;
		W[i] = d[A[i]][B[i]];
	}
}

Compilation message

citymapping.cpp: In function 'void calc(std::vector<int>)':
citymapping.cpp:38:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |   for(int j = 0; j < to.size(); j++){
      |                  ~~^~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9048 KB Correct: 24840 out of 500000 queries used.
2 Correct 6 ms 9140 KB Correct: 44196 out of 500000 queries used.
3 Correct 14 ms 9820 KB Correct: 154558 out of 500000 queries used.
4 Correct 7 ms 9052 KB Correct: 71741 out of 500000 queries used.
5 Correct 9 ms 9308 KB Correct: 76818 out of 500000 queries used.

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9048 KB Correct: 24840 out of 500000 queries used.
2 Correct 6 ms 9140 KB Correct: 44196 out of 500000 queries used.
3 Correct 14 ms 9820 KB Correct: 154558 out of 500000 queries used.
4 Correct 7 ms 9052 KB Correct: 71741 out of 500000 queries used.
5 Correct 9 ms 9308 KB Correct: 76818 out of 500000 queries used.
6 Correct 4 ms 9052 KB Correct: 25162 out of 500000 queries used.
7 Correct 6 ms 9048 KB Correct: 42147 out of 500000 queries used.
8 Correct 13 ms 9564 KB Correct: 129523 out of 500000 queries used.
9 Correct 17 ms 9820 KB Correct: 171840 out of 500000 queries used.
10 Correct 10 ms 9312 KB Correct: 69112 out of 500000 queries used.

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 8792 KB Too many calls to get_distance().
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 8792 KB Too many calls to get_distance().
2 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9048 KB Correct: 24840 out of 500000 queries used.
2 Correct 6 ms 9140 KB Correct: 44196 out of 500000 queries used.
3 Correct 14 ms 9820 KB Correct: 154558 out of 500000 queries used.
4 Correct 7 ms 9052 KB Correct: 71741 out of 500000 queries used.
5 Correct 9 ms 9308 KB Correct: 76818 out of 500000 queries used.
6 Correct 4 ms 9052 KB Correct: 25162 out of 500000 queries used.
7 Correct 6 ms 9048 KB Correct: 42147 out of 500000 queries used.
8 Correct 13 ms 9564 KB Correct: 129523 out of 500000 queries used.
9 Correct 17 ms 9820 KB Correct: 171840 out of 500000 queries used.
10 Correct 10 ms 9312 KB Correct: 69112 out of 500000 queries used.
11 Incorrect 3 ms 8792 KB Too many calls to get_distance().
12 Halted 0 ms 0 KB -