Submission #35111

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
35111	2017-11-18 05:34:42	imeimi2000	Towns (IOI15_towns)	C++14	100 / 100	36 ms	1220 KiB

towns

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#include "towns.h"
#include <vector>
#include <algorithm>
 
using namespace std;
 
int n;
 
int d0[110];
int d1[110];
int dist[110];
 
bool checkSame(int i, int j) {
  return (getDistance(i, j) != dist[i] + dist[j]);
}
 
bool chk[110];
bool check(int p) {
  int l = 0, r = 0;
  vector<int> vt;
  for (int i = 0; i < n; ++i) {
    if (d1[i] - dist[i] < p) ++l;
    else if (d1[i] - dist[i] > p) ++r;
    else vt.push_back(i);
  }
  if (vt.empty() || l > n / 2 || r > n / 2) return false;
  int st, sum = 0;
  vector<int> gr;
  for (int i = 0; i < vt.size(); ++i) {
    if (sum == 0) {
 
 
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Compilation message (stderr)

towns.cpp: In function 'bool check(int)':
towns.cpp:29:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < vt.size(); ++i) {
                    ^
towns.cpp:35:41: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    if (chk[i] = checkSame(vt[st], vt[i])) ++sum;
                                         ^
towns.cpp:39:6: warning: conversion to 'int' from 'std::vector<int>::size_type {aka long unsigned int}' may alter its value [-Wconversion]
  sum = (sum + (vt.size() - st)) / 2;
      ^
towns.cpp:40:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 1; i < gr.size(); ++i) {
                    ^
towns.cpp: At global scope:
towns.cpp:52:28: warning: unused parameter 'sub' [-Wunused-parameter]
 int hubDistance(int N, int sub) {
                            ^

• Subtask 1: 13 / 13
• Subtask 2: 12 / 12
• Subtask 3: 13 / 13
• Subtask 4: 10 / 10
• Subtask 5: 13 / 13
• Subtask 6: 39 / 39