結果

問題 No.2027 (1, 2, 3, …, N) 's Subset Sum
ユーザー llc5pgllc5pg
提出日時 2022-08-06 10:07:12
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 79 ms / 2,000 ms
コード長 4,658 bytes
コンパイル時間 1,841 ms
コンパイル使用メモリ 196,728 KB
実行使用メモリ 12,928 KB
最終ジャッジ日時 2024-09-16 05:49:25
合計ジャッジ時間 4,066 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,812 KB
testcase_01 AC 2 ms
6,940 KB
testcase_02 AC 75 ms
12,800 KB
testcase_03 AC 1 ms
6,940 KB
testcase_04 AC 75 ms
12,800 KB
testcase_05 AC 79 ms
12,928 KB
testcase_06 AC 77 ms
12,928 KB
testcase_07 AC 22 ms
7,040 KB
testcase_08 AC 60 ms
11,776 KB
testcase_09 AC 43 ms
11,648 KB
testcase_10 AC 37 ms
9,088 KB
testcase_11 AC 39 ms
10,368 KB
testcase_12 AC 34 ms
8,704 KB
testcase_13 AC 18 ms
6,940 KB
testcase_14 AC 7 ms
6,940 KB
testcase_15 AC 53 ms
12,416 KB
testcase_16 AC 44 ms
10,368 KB
testcase_17 AC 2 ms
6,940 KB
testcase_18 AC 2 ms
6,940 KB
testcase_19 AC 2 ms
6,940 KB
testcase_20 AC 2 ms
6,940 KB
testcase_21 AC 2 ms
6,940 KB
testcase_22 AC 43 ms
8,832 KB
testcase_23 AC 21 ms
6,940 KB
testcase_24 AC 7 ms
6,940 KB
testcase_25 AC 51 ms
9,856 KB
testcase_26 AC 12 ms
6,940 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
//#include <atcoder/modint>
//using namespace atcoder;
//using mint = modint998244353;
# define M_PI           3.14159265358979323846  /* pi */
 
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
 
const int MOD = (1e9+7);
void printmat(const vector<vector<ll>>& mat) {
    for (auto row : mat) {
        for (auto elem : row)
            cout << elem << " ";
        cout << "\n";
    }
}
void printdq(const deque<int>& v) {
    for (auto elem : v)
        cout << elem << " ";
    cout << endl;
}
void printv(const vector<int>& v) {
    for (auto elem : v)
        cout << elem << " ";
    cout << "\n";
}
void printvll(const vector<ll>& v) {
    for (auto elem : v)
        cout << elem << " ";
    cout << endl;
}
void printd(const deque<int>& v) {
    for (auto elem : v)
        cout << elem << " ";
    cout << endl;
}
void printvp(const vector<pair<int,int>>& vp) {
    for (auto pr : vp) {
        cout << pr.first << ", " << pr.second;
        cout << endl;
    }
}
void printvs(const vector<set<int>>& vs) {
    for (auto row : vs) {
        for (auto elem : row)
            cout << elem << ", ";
        cout << endl;
    }
}
void printht(const unordered_map<int, int>& ht) {
    for (auto elem : ht)
        cout << elem.first << " : " << elem.second << endl;
}
void printmp(const map<ll, ll>& ht) {
    for (auto elem : ht)
        cout << elem.first << " : " << elem.second << endl;
}
void printst(const set<int>& st) {
    for (auto elem : st)
        cout << elem << " ";
    cout << endl;
}
 
bool isPrime(long long n) {
    if (n <= 1)
        return false;
    if (n <= 3)
        return true;
    if (n % 2 == 0 || n % 3 == 0)
        return false;
    for (long long i = 5; i * i <= n; i = i + 6)
        if (n % i == 0 || n % (i + 2) == 0)
            return false;
    return true;
}
 
map<long long, long long> primeFactors(long long n) {
    map<long long, long long> ans;
    while (n % 2 == 0) {
        ans[2]++;
        n = n/2;
    }
    for (long long i = 3; i*i <= (n); i = i + 2) {
        while (n % i == 0) {
            ans[i]++;
            n = n/i;
        }
    }
    if (n > 2)
        ans[n]++;
    return ans;
}
 
int find_f(const vector<int>& uf, int i) {
    while (uf[i]!=i)
        i = uf[i];
    return i;
}
bool union_f(vector<int>& uf, vector<int>& sz, int a, int b) {
    a = find_f(uf, a);
    b = find_f(uf, b);
    //cout << "a, b = " << a << ", " << b << endl;
    if (a==b) return false;
    if (sz[a] < sz[b]) {
        //cout << "sz[a], sz[b] = " << sz[a] << ", " << sz[b] << endl;
        //cout << "a, b = " << a << ", " << b << endl;
        swap(a,b);
        //cout << "a, b = " << a << ", " << b << endl;
    }
    sz[a] += sz[b];
    uf[b] = a;
    return true;
}
 
long long modexp(long long b, long long e, long long M) {
    if (!e) return 1;
    b %= M;
    long long x = modexp(b * b % M, e / 2, M);
    if (e % 2) {
        return b * x % M;
    } else {
        return x;
    }
}


ll gcdExtended(ll a, ll b, ll* x, ll* y) {
    if (a == 0) {
        *x = 0, *y = 1;
        return b;
    }
    ll x1, y1;
    ll gcd = gcdExtended(b % a, a, &x1, &y1);
    *x = y1 - (b / a) * x1;
    *y = x1;
    return gcd;
}

ll modInverse(ll a, ll m) {
    ll x, y, res=-1;
    ll g = gcdExtended(a, m, &x, &y);
    if (g != 1)
        cout << "Inverse doesn't exist";
    else {
        // m is added to handle negative x
        res = (x % m + m) % m;
    }
    return res;
}

int lenOfLIS(vector<int>& v) {        
    int n = v.size(), len = 0;
    vector<int> dp(n,0);
    for (int num : v) {
        int i = lower_bound(dp.begin(), dp.begin()+len, num) - dp.begin();
        dp[i] = num;
        if (i == len) {
            len++;
        }
    }
    return len;        
}


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);    
    int T=1, caseIdx=0;
    //cin >> T;  
    while (T--) {
        //caseIdx++;
        ll n, sum;
        cin >> n >> sum;
        set<ll> st;
        for (ll i=1; i<=n; i++) {
            st.insert(i);
        }
        vector<ll> v;
        while (sum>0) {
            auto it = st.lower_bound(sum);
            int val = *it;
            //cout << val << endl;
            v.push_back(val);
            sum -= val;
            if (it==st.end())
                it--;
            st.erase(it);
            //break;
        }
        reverse(v.begin(), v.end());
        int ans = v.size();
        cout << ans << "\n";
        printvll(v);
        
        //cout << ans << "\n";
        //cout << "Case #" << caseIdx << ": " ;//<< "ans" << "\n";   
    }
}
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