Submission #378264

#	Time	Username	Problem	Language	Result	Execution time	Memory
378264		urd05	Meetings (JOI19_meetings)	C++14	100 / 100	1286 ms	1004 KiB

meetings

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

mt19937 rd = mt19937((unsigned)chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution<int> ran(0, 2147483647);
int s,t;

bool comp(int a,int b) {
    if (a==b) {
        return false;
    }
    if (Query(a,b,t)==b) {
        return true;
    }
    else {
        return false;
    }
}

void f(vector<int> v) {
    if (v.size()==1) {
        return;
    }
    int one=ran(rd)%v.size();
    int two=ran(rd)%v.size();
    while (one==two) {
        two=ran(rd)%v.size();
    }
    vector<int> save(v.size());
    for(int i=0;i<v.size();i++) {
        if (i!=one&&i!=two) {
            save[i]=Query(v[one],v[two],v[i]);
        }
    }
    save[one]=v[one];
    save[two]=v[two];
    vector<int> vec;
    for(int i=0;i<v.size();i++) {
        if (i!=one&&i!=two&&save[i]==v[i]) {
            vec.push_back(v[i]);
        }
    }
    s=v[one];
    t=v[two];
    sort(vec.begin(),vec.end(),comp);
    vec.insert(vec.begin(),v[one]);
    vec.push_back(v[two]);
    for(int i=0;i+1<vec.size();i++) {
        Bridge(min(vec[i],vec[i+1]),max(vec[i],vec[i+1]));
    }
    vector<vector<int>> val(vec.size());
    for(int i=0;i<v.size();i++) {
        for(int j=0;j<vec.size();j++) {
            if (save[i]==vec[j]) {
                val[j].push_back(v[i]);
                break;
            }
        }
    }
    for(int i=0;i<vec.size();i++) {
        f(val[i]);
    }
}

void Solve(int n) {
    mt19937 rd = mt19937((unsigned)chrono::steady_clock::now().time_since_epoch().count());
    uniform_int_distribution<int> ran(0, 2147483647);
    vector<int> vec;
    for(int i=0;i<n;i++) {
        vec.push_back(i);
    }
    f(vec);
}

Compilation message (stderr)

meetings.cpp: In function 'void f(std::vector<int>)':
meetings.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0;i<v.size();i++) {
      |                 ~^~~~~~~~~
meetings.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int i=0;i<v.size();i++) {
      |                 ~^~~~~~~~~
meetings.cpp:49:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for(int i=0;i+1<vec.size();i++) {
      |                 ~~~^~~~~~~~~~~
meetings.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int i=0;i<v.size();i++) {
      |                 ~^~~~~~~~~
meetings.cpp:54:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int j=0;j<vec.size();j++) {
      |                     ~^~~~~~~~~~~
meetings.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int i=0;i<vec.size();i++) {
      |                 ~^~~~~~~~~~~
meetings.cpp: In function 'void Solve(int)':
meetings.cpp:67:13: warning: variable 'rd' set but not used [-Wunused-but-set-variable]
   67 |     mt19937 rd = mt19937((unsigned)chrono::steady_clock::now().time_since_epoch().count());
      |             ^~

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 71 / 71