제출 #721283

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
721283		vjudge1	Uzastopni (COCI17_uzastopni)	C++17	48 / 80	60 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 > 7*1e7){
        return 0;
    }
    vector<ll> table;
    table.push_back(1);
    for(ll i = 2; i <= k; i++){
        if(table.back() == n){
           cout << 1 <<" "<< i-1 <<"\n";
        }
        table.push_back((i*(i+1))/2);
    }
    ll pos = upper_bound(table.begin(), table.end(), n) - table.begin();

    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";
        }
    }


}

컴파일 시 표준 에러 (stderr) 메시지

uzastopni.cpp: In function 'int main()':
uzastopni.cpp:28:23: 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]
   28 |     for(ll i = pos; i < table.size(); i++){
      |                     ~~^~~~~~~~~~~~~~

• Subtask 1: 48 / 80