제출 #548817

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
548817		Mazaalai	City Mapping (NOI18_citymapping)	C++17	32 / 100	2 ms	524 KiB

citymapping

#include "citymapping.h"
#define ff first
#define ss second
#define ALL(x) x.begin(),x.end()
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
using ll = long long; 
using PII = pair <ll, int>;
ll get(int a, int b) {
	// cout << "ASK: " << a << ' ' << b << '\n';
	ll x = get_distance(a, b);
	return x;
}
int pt = 0;
vector <vector <int> > ans;
void find_roads(int n, int q, int a[], int b[], int w[]) {
	PII edge;
	edge = {0, 0};
	for (int i = 2; i <= n; i++) {
		ll x = get(1, i);
		if (edge.ff < x) edge = {x, i};
	}
	vector <PII> vals;
	int ed = edge.ss;
	for (int i = 1; i <= n; i++) {
		if (i == edge.ss) continue;
		ll x = get(ed, i);
		vals.pb({x, i});
	}
	sort(ALL(vals));
	ans.pb({ed, vals[0].ss, (int)vals[0].ff});
	for (int i = 0; i+1 < vals.size(); i++) {
		ans.pb({vals[i].ss, vals[i+1].ss, (int)(vals[i+1].ff - vals[i].ff)});
	}
	for (auto el : ans) {
		int x = el[0], y = el[1], z = el[2];
		a[pt] = x;
		b[pt] = y;
		w[pt] = z;
		pt++;
	}
}

/*
5 100000000 5 
1 4 1       
2 4 1
3 4 1
3 5 1
*/

컴파일 시 표준 에러 (stderr) 메시지

citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for (int i = 0; i+1 < vals.size(); i++) {
      |                  ~~~~^~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 13 / 13
• Subtask 4: 19 / 19
• Subtask 5: 0 / 43