Submission #669864

#	Time	Username	Problem	Language	Result	Execution time	Memory
669864		alvingogo	Towns (IOI15_towns)	C++14	Compilation error	0 ms	0 KiB

towns

#include <bits/stdc++.h>
//#include <towns.h>
#pragma GCC optimize("Ofast")
#define AquA cin.tie(0);ios_base::sync_with_stdio(0);
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

/*
int nn;
vector<vector<int> > dis;
int getDistance(int x,int y){
    assert(x>=0 && x<nn);
    assert(y>=0 && y<nn);
    return dis[x][y];
}
*/
map<pair<int,int>,int> mp;
int f(int x,int y){
    if(x==y){
        return 0;
    }
    if(x>y){
        swap(x,y);
    }
    if(mp.find({x,y})!=mp.end()){
        return mp[{x,y}];
    }
    return mp[{x,y}]=getDistance(x,y);
}
int hubDistance(int N,int sub){
    int n=N;
    int a=0;
    for(int i=0;i<n;i++){
        if(f(0,i)>f(0,a)){
            a=i;
        }
    }
    int b=a;
    for(int i=0;i<n;i++){
        if(f(a,i)>f(a,b)){
            b=i;
        }
    }
    cout << a << " " << b << endl;
    map<int,pair<int,vector<int> > > m;
    for(int i=0;i<n;i++){
        if(i!=a && i!=b){
            int d=(f(i,a)+f(i,b)-f(a,b))/2;
            int x=f(i,a)-d;
            m[x].fs=max(m[x].fs,d);
            m[x].sc.push_back(i);
        }
    }
    vector<int> g;
    for(auto h:m){
        g.push_back(h.fs);
    }
    int p=g.size();
    vector<int> dis(p,0);
    for(int i=0;i<p;i++){
        dis[i]=max(dis[i],max(g[i],f(a,b)-g[i]));
        for(int j=i+1;j<p;j++){
            int u=g[j]-g[i];
            cout << u << "\n";
            dis[i]=max(dis[i],m[g[j]].fs+u);
            dis[j]=max(dis[j],m[g[i]].fs+u);
        }
    }
    int y=2e9;
    for(int i=0;i<p;i++){
        y=min(y,dis[i]);
    }
    return y;
}

/*
int main(){
    cin >> nn;
    dis.resize(nn,vector<int>(nn));
    for(int i=0;i<nn;i++){
        for(int j=0;j<nn;j++){
            cin >> dis[i][j];
        }
    }
    cout << hubDistance(nn,1) << "\n";
    return 0;
}
*/

Compilation message (stderr)

towns.cpp: In function 'int f(int, int)':
towns.cpp:30:22: error: 'getDistance' was not declared in this scope
   30 |     return mp[{x,y}]=getDistance(x,y);
      |                      ^~~~~~~~~~~
towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:60:17: warning: conversion from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   60 |     int p=g.size();
      |           ~~~~~~^~
towns.cpp:32:27: warning: unused parameter 'sub' [-Wunused-parameter]
   32 | int hubDistance(int N,int sub){
      |                       ~~~~^~~