제출 #983098

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
983098		vjudge1	사이버랜드 (APIO23_cyberland)	C++17	컴파일 에러	0 ms	0 KiB

cyberland

#include "cyberland.h"

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

int nonol(vector<vector<pair<int, int>>> g, int N, int M, int K, int H, vector<int> arr) {
	vector<bool> used(N), ot(N);
	function<void(int, int)> dfs = [&](int v, int cnt) {
		assert(!used[v]);
		used[v] = true;
		for (auto [to, weight]: g[v]) {
			if (!used[to]) {
				if (arr[to] == 2 && cnt) {
					ot[to] = true;
					dfs(to, cnt - 1);
				} else dfs(to, cnt);
			}
		}
	};
	vector<double> d(N + 1, 1e18);
	d[0] = 0;
	set<pair<double, int>> q;
	q.emplace(d[0], 0);
	while (!q.empty()) {
		int nearest = q.begin()->second;
		q.erase(q.begin());
		for (auto [to, weight]: g[nearest]) {
			double dis = d[nearest] + weight;
			if (ot[to]) dis /= 2;
			if (!arr[to]) dis = 0;
			if (d[to] > dis) {
				q.erase(pair{d[to], to});
				d[to] = dis;
				q.emplace(d[to], to);
			}
		}
	}
        if (d[H] == 1e18) d[H] = -1;
	return d[H];
}

int s1(vector<vector<pair<int, int>>> g, int N, int M, int K, int H, vector<int> arr) {
	int dis = 1e18;
	bool can = false;
	int zap, u;
	for (auto [to, weight]: g[0]) {
		if (to == H) {
			dis = min(dis, weight);
		} else can = true, zap = weight, u = to;
	}
	if (can) {
		int sec, w;
		can = false;
		for (auto [to, weight]: g[u]) {
			if (to == H) sec = to, can = false, w = weight;
		}
		if (arr[u] == 0) dis = min(dis, w);
		else if (arr[u] == 1) dis = min(dis, w + zap);
		else dis = min(dis, zap / 2 + w);
	}
	if (dis == 1e18) dis = -1;
	return dis;
}

double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) {
    vector<vector<pair<int, int>>> g(N);
    bool is2 = true;
    for (int i = 0; i < M; ++i) {
		g[x[i]].emplace_back(y[i], c[i]);
		g[y[i]].emplace_back(x[i], c[i]);
		if (x[i] != i || y[i] != i + 1) is2 = false;
	}
	if (n <= 3) return s1(g, N, M, K, H, arr);
	else if (is2) return s4(g, N, M, K, H, arr);
	else if (find(arr.begin(), arr.end(), 0LL) == arr.end()) return nonol(g, N, M, K, H, arr);
	else return yesnol(g, N, M, K, H, arr);
}

컴파일 시 표준 에러 (stderr) 메시지

cyberland.cpp: In function 'int s1(std::vector<std::vector<std::pair<int, int> > >, int, int, int, int, std::vector<int>)':
cyberland.cpp:43:12: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   43 |  int dis = 1e18;
      |            ^~~~
cyberland.cpp:52:7: warning: variable 'sec' set but not used [-Wunused-but-set-variable]
   52 |   int sec, w;
      |       ^~~
cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:73:6: error: 'n' was not declared in this scope
   73 |  if (n <= 3) return s1(g, N, M, K, H, arr);
      |      ^
cyberland.cpp:74:23: error: 's4' was not declared in this scope; did you mean 's1'?
   74 |  else if (is2) return s4(g, N, M, K, H, arr);
      |                       ^~
      |                       s1
cyberland.cpp:76:14: error: 'yesnol' was not declared in this scope
   76 |  else return yesnol(g, N, M, K, H, arr);
      |              ^~~~~~