oj.uz

답안 #585357

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
585357 2022-06-28T17:45:42 Z GusterGoose27 Bali Sculptures (APIO15_sculpture) C++11
0 / 100
 2 ms 2388 KB 
#include <bits/stdc++.h>

using namespace std;

typedef pair<int, int> pii;

const int MAXN = 3e4;
const int inf = 1e9;
vector<pii> edges[MAXN];
int n, m;
int dist[MAXN];
vector<int> jump_occs[MAXN+1];
int occ_pos[MAXN+1];
vector<int> valsat[MAXN];

void dijkstra(int s) {
	fill(dist, dist+n, inf);
	dist[s] = 0;
	priority_queue<pii> pq;
	pq.push(pii(0, s));
	while (!pq.empty()) {
		pii p = pq.top();
		pq.pop();
		int cur = p.second;
		if (dist[cur] < p.first) continue;
		for (pii e: edges[cur]) {
			if (dist[cur]+e.second < dist[e.first]) {
				dist[e.first] = dist[cur]+e.second;
				pq.push(pii(dist[e.first], e.first));
			}
		}
	}
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n >> m;
	int posf;
	int poss;
	for (int i = 0; i < m; i++) {
		int x, y; cin >> x >> y;
		if (i == 1) posf = x;
		if (i == 0) poss = x;
		jump_occs[y].push_back(x);
		occ_pos[y]++;
		valsat[x].push_back(y);
		//at[x].insert(y);
	}
	for (int i = n-1; i >= 0; i--) {
		for (int p: valsat[i]) {
			occ_pos[p]--;
			int cur = occ_pos[p];
			int psize = jump_occs[p].size();
			for (int j = i+p; j < n; j += p) {
				edges[i].push_back(pii(j, (j-i)/p));
				while (cur < psize && jump_occs[p][cur] < j) cur++;
				if (cur < psize && jump_occs[p][cur] == j) break;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		for (int p: valsat[i]) {
			int cur = occ_pos[p];
			for (int j = i-p; j >= 0; j -= p) {
				edges[i].push_back(pii(j, (i-j)/p));
				while (cur >= 0 && jump_occs[p][cur] > j) cur--;
				if (cur >= 0 && jump_occs[p][cur] == j) break;
			}
			occ_pos[p]++;
		}
	}
	dijkstra(poss);
	cout << ((dist[posf] == inf) ? (-1) : dist[posf]) << "\n";
	return 0;
}

Compilation message

sculpture.cpp: In function 'int main()':
sculpture.cpp:72:10: warning: 'poss' may be used uninitialized in this function [-Wmaybe-uninitialized]
   72 |  dijkstra(poss);
      |  ~~~~~~~~^~~~~~
sculpture.cpp:73:21: warning: 'posf' may be used uninitialized in this function [-Wmaybe-uninitialized]
   73 |  cout << ((dist[posf] == inf) ? (-1) : dist[posf]) << "\n";
      |            ~~~~~~~~~^

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2388 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2388 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2388 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2388 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2388 KB Output isn't correct
2 Halted 0 ms 0 KB -