Submission #1013415

#	Time	Username	Problem	Language	Result	Execution time	Memory
1013415		kunzaZa183	Magic Show (APIO24_show)	C++17	100 / 100	3 ms	1200 KiB

Alice

#include "Alice.h"

#include <bits/stdc++.h>
using namespace std;
const int n = 5000;

// you may define some global variables, but it does not work if you try to
// transfer any information from function Alice() to function Bob() through
// these variables. you had better not use the same global variables in function
// Alice() and in function Bob().

vector<pair<int, int>> Alice() {
  // add your code here

  // change below into your code
  long long x = setN(n);
  vector<pair<int, int>> vpii;
  for (int i = 1; i < n; i++) 
    vpii.emplace_back(i + 1, x % i + 1);
  return vpii;
}

Bob

#include "Bob.h"

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

// you may define some global variables, but it does not work if you try to
// transfer any information from function Alice() to function Bob() through
// these variables. you had better not use the same global variables in function
// Alice() and in function Bob().

long long Bob(vector<pair<int, int>> V) {
  for (auto &a : V) {
    if (a.first > a.second) swap(a.first, a.second);
    a.first--, a.second--;
  }
  // cout << "Edges\n";
  // for (auto a : V) cout << a.first << ' ' << a.second << "\n";

  unsigned long long jump = 1;
  int in = 0;
  unsigned long long x = 0;
  for (x = 0; x <= 1e18; x += jump) {
    // cout << x << ' ' << in << ' ' << jump << "\n";
    while (in < V.size()) {
      if (x % V[in].second == V[in].first) {
        if (jump <= 1e15) jump = jump / gcd(jump, V[in].second) * V[in].second;
        in++;
      } else
        break;
    }
    if (in >= V.size()) break;
  }
  for(auto a:V)
    if(x % a.second != a.first)
      while(1)
      {

      }
  return x;
}

Compilation message (stderr)

Bob.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:24:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     while (in < V.size()) {
      |            ~~~^~~~~~~~~~
Bob.cpp:25:28: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   25 |       if (x % V[in].second == V[in].first) {
      |           ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
Bob.cpp:31:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     if (in >= V.size()) break;
      |         ~~~^~~~~~~~~~~
Bob.cpp:34:21: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   34 |     if(x % a.second != a.first)
      |        ~~~~~~~~~~~~~^~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 65 / 65