Submission #880933

#	Time	Username	Problem	Language	Result	Execution time	Memory
880933		HuyQuang_re_Zero	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	718 ms	63780 KiB

railroad

#include <bits/stdc++.h>
#define ll long long
#define db long double
#define II pair <ll,ll>
#define III pair <ll,II>
#define IV pair <vector <int>,vector <int> >
#define IDB pair <db,int>
#define TII pair <treap*,treap*>
#define fst first
#define snd second
#define BIT(x,i) ((x>>i)&1)
#define pi acos(-1)
#define to_radian(x) (x*pi/180.0)
#define to_degree(x) (x*180.0/pi)
#define Log(x) (31-__builtin_clz((int)x))
#define LogLL(x) (63-__builtin_clzll((ll)x))
using namespace std;
#include "railroad.h"
ll plan_roller_coaster(vector <int> s,vector <int> t)
{
    set <int> val;
    map <int,int> U,D;
    int i;
    for(i=0;i<s.size();i++)
    {
        val.insert(s[i]); val.insert(t[i]);
        if(s[i]<=t[i]) U[s[i]]++,U[t[i]]--;
        else D[t[i]]++,D[s[i]]--;
    }
    val.insert(1);
    int up=0,down=0;
    for(int x:val)
    {
        up+=U[x]; down+=D[x];
        if(up>down) return 1;
    }
    return 0;
}
/*
int main()
{
    freopen("railroad.inp","r",stdin);
    freopen("railroad.out","w",stdout);
    vector <int> s,t;
    int l,r;
    while(cin>>l>>r) s.push_back(l),t.push_back(r);
    cout<<plan_roller_coaster(s,t);
}
*/

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(i=0;i<s.size();i++)
      |             ~^~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36