Submission #721274

#	Time	Username	Problem	Language	Result	Execution time	Memory
721274		vjudge1	Uzastopni (COCI17_uzastopni)	C++17	0 / 80	58 ms	65536 KiB

uzastopni

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);

    ll n; cin >> n;

    ll k = n/2+1;

    if(k >= 1e8){
        for(int i = 0; i <= 1e8; i++){
            for(int j = 0; j <= 1e8; j++){

            }
        }
    }

    vector<ll> table;
    table.push_back(1);
    ll pos = 0;
    for(ll i = 2; i <= k; i++){
        if(table.back() == n){
           cout << 1 <<" "<< i-1 <<"\n";
        }
        if(table.back() > n){
            pos = i;
        }
        table.push_back((i*(i+1))/2);

    }

    for(ll i = pos; i < table.size(); i++){
        if(binary_search(table.begin(), table.end(), table[i]-n)){
            cout << lower_bound(table.begin(), table.end(), table[i]-n)-table.begin()+2 <<" "<< i+1 <<"\n";
        }
    }


}

Compilation message (stderr)

uzastopni.cpp: In function 'int main()':
uzastopni.cpp:37:23: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     for(ll i = pos; i < table.size(); i++){
      |                     ~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 80