제출 #321002

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
321002		phathnv	Toys (CEOI18_toy)	C++11	59 / 100	5010 ms	23560 KiB

toy

#include <bits/stdc++.h>

#define mp make_pair
#define X first
#define Y second
#define taskname "Toys"

using namespace std;

typedef long long ll;
typedef pair <int, int> ii;

int n;
vector <int> divisors;
vector < set<int> > res;
map <int, int> pos;

void readInput(){
    cin >> n;
}

void solve(){
    for(int i = 1; i * i <= n; i++){
        if (n % i)
            continue;
        divisors.push_back(i);
        if (i * i != n)
            divisors.push_back(n / i);
    }
    sort(divisors.begin(), divisors.end());
    res.resize(divisors.size());

    for(int i = 0; i < divisors.size(); i++)
        pos[divisors[i]] = i;
    for(int i = 0; i < divisors.size(); i++){
        res[i].insert(divisors[i] - 1);
        for(int j = i + 1; j < divisors.size(); j++){
            if (divisors[j] % divisors[i])
                continue;
            set <int> tmp = res[i];
            for(int x : tmp)
                for(int y : res[pos[divisors[j] / divisors[i]]])
                    res[j].insert(x + y);
        }
    }
    cout << res.back().size() << '\n';
    for(int x : res.back())
        cout << x << ' ';
}

int main(){
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    readInput();
    solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

toy.cpp: In function 'void solve()':
toy.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |     for(int i = 0; i < divisors.size(); i++)
      |                    ~~^~~~~~~~~~~~~~~~~
toy.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i = 0; i < divisors.size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~
toy.cpp:37:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         for(int j = i + 1; j < divisors.size(); j++){
      |                            ~~^~~~~~~~~~~~~~~~~
toy.cpp: In function 'int main()':
toy.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   53 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
toy.cpp:54:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   54 |         freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 19 / 19
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 21