제출 #400239

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
400239		bigg	도시들 (IOI15_towns)	C++11	컴파일 에러	0 ms	0 KiB

towns

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

const int MAXN = 1e9;

int dist[5][MAXN];
pair<int, int> p1, p2;
map<int, int> AB;
int hubDistance(int N, int sub) {
	p1 = {0,0};
	p2 = {0,0};
	AB.clear();
	for(int i = 0; i < N; i++){
		int d = getDistance(0, i);
		if(d > p1.second) p1 = {i,d};
	}	
	for(int i = 0; i < N; i++){
	
		dist[0][i] = getDistance(i, p1.first);
		if(dist[0][i] > p2.second) p2 = { i, dist[0][i]};
	}
	for(int i = 0; i < N; i++){
		
		dist[1][i] = getDistance(i, p2.first);
	}
	int ans = MAXN;
	int diam = dist[0][p2.first];
	for(int i = 0; i < N; i++) ans = min(ans, (diam + abs(dist[0][i] - dist[1][i]))/2);

	for(int i = 0; i < N; i++){
		if(i == p1.first || i == p2.first) continue;
		int i1 = dist[0][i], i2 = dist[1][i];
		AB[i1 - (i1+i2-diam)/2]++;
	}
	int jacontei = 1;
	bool iscentroid = 0;
	for(map<int,int> :: iterator it : AB){
		if(it.first == ans || it.first == diam - ans){
			if(jacontei <= N/2 && N - jacontei - it.second <= N/2 && it.second <= N/2) iscentroid = 1;
		}
		jacontei += it.second;
	}
	if(!iscentroid) ans = -ans;
	return ans;              
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:38:36: error: conversion from 'std::pair<const int, int>' to non-scalar type 'std::map<int, int>::iterator' {aka 'std::_Rb_tree_iterator<std::pair<const int, int> >'} requested
   38 |  for(map<int,int> :: iterator it : AB){
      |                                    ^~
towns.cpp:39:9: error: 'std::map<int, int>::iterator' {aka 'struct std::_Rb_tree_iterator<std::pair<const int, int> >'} has no member named 'first'
   39 |   if(it.first == ans || it.first == diam - ans){
      |         ^~~~~
towns.cpp:39:28: error: 'std::map<int, int>::iterator' {aka 'struct std::_Rb_tree_iterator<std::pair<const int, int> >'} has no member named 'first'
   39 |   if(it.first == ans || it.first == diam - ans){
      |                            ^~~~~
towns.cpp:40:44: error: 'std::map<int, int>::iterator' {aka 'struct std::_Rb_tree_iterator<std::pair<const int, int> >'} has no member named 'second'
   40 |    if(jacontei <= N/2 && N - jacontei - it.second <= N/2 && it.second <= N/2) iscentroid = 1;
      |                                            ^~~~~~
towns.cpp:40:64: error: 'std::map<int, int>::iterator' {aka 'struct std::_Rb_tree_iterator<std::pair<const int, int> >'} has no member named 'second'
   40 |    if(jacontei <= N/2 && N - jacontei - it.second <= N/2 && it.second <= N/2) iscentroid = 1;
      |                                                                ^~~~~~
towns.cpp:42:18: error: 'std::map<int, int>::iterator' {aka 'struct std::_Rb_tree_iterator<std::pair<const int, int> >'} has no member named 'second'
   42 |   jacontei += it.second;
      |                  ^~~~~~
towns.cpp:10:28: warning: unused parameter 'sub' [-Wunused-parameter]
   10 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~