Submission #1040921

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040921		Andrey	Magic Show (APIO24_show)	C++17	100 / 100	2 ms	832 KiB

Alice

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


std::vector<std::pair<int,int>> Alice(){
    long long x = setN(5000);
    vector<pair<int,int>> haha(0);
    for(int i = 2; i <= 5000; i++) {
        haha.push_back({x%(i-1)+1,i});
    }
    return haha;
}

Bob

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

long long gcd(long long a, long long b) {
    if(b == 0) {
        return a;
    }
    return gcd(b,a%b);
}

long long lcm(long long a, long long b) {
    return (a/gcd(a,b))*b;
}

long long Bob(std::vector<std::pair<int,int>> haha){
	long long c = 1,ost = 0;
    for(int i = 0; i < haha.size(); i++) {
        int a = haha[i].first,b = haha[i].second;
        if(a > b) {
            swap(a,b);
        }
        while(ost%(b-1) != a-1) {
            ost+=c;
        }
        c = lcm(c,b-1);
    }
    if(ost == 0) {
        return c;
    }
    else {
        return ost;
    }
}

Compilation message (stderr)

Bob.cpp: In function 'long long int Bob(std::vector<std::pair<int, int> >)':
Bob.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i = 0; i < haha.size(); i++) {
      |                    ~~^~~~~~~~~~~~~

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