제출 #981355

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
981355		Jawad_Akbar_JJ	Road Closures (APIO21_roads)	C++17	컴파일 에러	0 ms	0 KiB

roads

#include <iostream>
#include <vector>
#include <algorithm>
#include "roads.h"

using namespace std;
#define ll long long
const int N = 1e5 + 10;
vector<pair<int,int>> nei[N];

vector<ll> sub1(int n,vector<int> W){
	sort(rbegin(W),rend(W));
	vector<ll> v;
	v.push_back(0);
	for (int i : W)
		v[0] += i;
	for (int i : W)
		v.push_back(v.back() - i);
	return v;
}

vector<ll> sub2(int n,vector<int> W){
	ll t = W[0];
	ll nt = 0;
	vector<ll> v(n,0);
	v[0] += W[0];
	for (int i=1;i<n-1;i++){
		ll a = t;
		t = min(t,nt) + W[i];
		nt = a;
		v[0] += W[i];
	}
	v[1] = min(t,nt);
	return v;
}

int minimum_closure_costs(int n,vector<int> U,vector<int> V,vector<int> W){
	long long sum = 0,sum2 = 0,sum3 = 0;

	for (int i=0;i<n-1;i++)
		sum += U[i],sum2 += W[i],sum3 += (U[i] == i);
	
	if (sum == 0)
		return sub1(n,W);
	
	// if (sum2 == n-1)
	// 	return sub5(n,U,V);
	if (sum3 == n-1)
		return sub2(n,W);
}

컴파일 시 표준 에러 (stderr) 메시지

roads.cpp:37:5: error: ambiguating new declaration of 'int minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)'
   37 | int minimum_closure_costs(int n,vector<int> U,vector<int> V,vector<int> W){
      |     ^~~~~~~~~~~~~~~~~~~~~
In file included from roads.cpp:4:
roads.h:3:24: note: old declaration 'std::vector<long long int> minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)'
    3 | std::vector<long long> minimum_closure_costs(int N, std::vector<int> U,
      |                        ^~~~~~~~~~~~~~~~~~~~~
roads.cpp: In function 'int minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)':
roads.cpp:44:14: error: cannot convert 'std::vector<long long int>' to 'int' in return
   44 |   return sub1(n,W);
      |          ~~~~^~~~~
      |              |
      |              std::vector<long long int>
roads.cpp:49:14: error: cannot convert 'std::vector<long long int>' to 'int' in return
   49 |   return sub2(n,W);
      |          ~~~~^~~~~
      |              |
      |              std::vector<long long int>