Submission #933902

#	Time	Username	Problem	Language	Result	Execution time	Memory
933902		dilanyan	Bootfall (IZhO17_bootfall)	C++17	0 / 100	2 ms	348 KiB

bootfall

//-------------dilanyan------------\\ 
 
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
 
//------------------Kargpefines--------------------\\ 
 
#define ll long long
#define pb push_back
#define all(u) (u).begin(), (u).end()
#define pqueue priority_queue
#define upper upper_bound
#define lower lower_bound
#define umap unordered_map
#define uset unordered_set
 
void KarginSet(string name = "") {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    if (name.size()) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}
 
//-------------------KarginConstants------------------\\ 
 
const ll mod = 1000000007;
const ll inf = 1e9;
 
//-------------------KarginCode-----------------------\\ 
 
const int N = 200005;
int a[N], dp[N];

void KarginSolve() {
    int n; cin >> n;
    int sum = 0;
    for (int i = 1;i <= n;i++) {
        cin >> a[i];
        sum += a[i];
    }
    vector<int> ans;
    for (int s = 1;s <= sum / 2;s++) {
        bool flag = true;
        for (int k = 0;k <= n;k++) {
            a[0] = s;
            for (int i = 0;i <= sum + s - a[k];i++) dp[i] = false;
            dp[0] = true;
            for (int i = 0;i <= n;i++) {
                if(i == k) continue;
                for (int j = sum + s - a[k];j >= 0;j--) {
                    if (j + a[i] <= sum + s - a[k] && dp[j]) dp[j + a[i]] = true;
                }
            }
            if (!((sum + s - a[k]) % 2 == 0 && dp[(sum + s - a[k]) / 2])) {
                flag = false;
                break;
            }
        }
        if (flag) ans.pb(s);
    }
    cout << ans.size() << '\n';
    for (int i : ans) cout << i << ' ';
}

int main() {
    KarginSet();
    int test = 1;
    //cin >> test;
    while (test--) {
        KarginSolve();
    }
    return 0;
}

Compilation message (stderr)

bootfall.cpp:1:1: warning: multi-line comment [-Wcomment]
    1 | //-------------dilanyan------------\\
      | ^
bootfall.cpp:8:1: warning: multi-line comment [-Wcomment]
    8 | //------------------Kargpefines--------------------\\
      | ^
bootfall.cpp:27:1: warning: multi-line comment [-Wcomment]
   27 | //-------------------KarginConstants------------------\\
      | ^
bootfall.cpp:32:1: warning: multi-line comment [-Wcomment]
   32 | //-------------------KarginCode-----------------------\\
      | ^
bootfall.cpp: In function 'void KarginSet(std::string)':
bootfall.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bootfall.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen((name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 21
• Subtask 6: 0 / 35