結果

問題 No.269 見栄っ張りの募金活動
ユーザー soraie_soraie_
提出日時 2021-07-21 19:02:30
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 14 ms / 5,000 ms
コード長 11,572 bytes
コンパイル時間 5,426 ms
コンパイル使用メモリ 296,292 KB
実行使用メモリ 11,904 KB
最終ジャッジ日時 2024-07-17 14:16:55
合計ジャッジ時間 6,459 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge1
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
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 7 ms
6,940 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 14 ms
11,904 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 4 ms
5,376 KB
testcase_12 AC 2 ms
5,376 KB
testcase_13 AC 4 ms
5,376 KB
testcase_14 AC 4 ms
5,376 KB
testcase_15 AC 4 ms
5,376 KB
testcase_16 AC 2 ms
5,376 KB
testcase_17 AC 2 ms
5,376 KB
testcase_18 AC 6 ms
6,400 KB
testcase_19 AC 3 ms
5,376 KB
testcase_20 AC 3 ms
5,376 KB
testcase_21 AC 4 ms
5,376 KB
testcase_22 AC 3 ms
5,376 KB
testcase_23 AC 2 ms
5,376 KB
testcase_24 AC 4 ms
5,376 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 # 

#ifdef _DEBUG
#ifdef _SORAIE
#define _GLIBCXX_DEBUG
#endif
#endif

#include <bits/stdc++.h>

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")

using namespace std;
//--------------------------------------------------------------------
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define overload4(_1,_2,_3,_4,name,...) name
#define rep1(n) for(ll _ThiS_WoNt_Be_usEd=0;_ThiS_WoNt_Be_usEd<(ll)n;++_ThiS_WoNt_Be_usEd)
#define rep2(i,n) for(ll i=0;i<(ll)n;++i)
#define rep3(i,a,b) for(ll i=(ll)a;i<(ll)b;++i)
#define rep4(i,a,b,c) for(ll i=(ll)a;i<(ll)b;i+=(ll)c)
#define rep(...) overload4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)
#ifdef _DEBUG
#define pass(...) __VA_ARGS__ ;

#define debug1(a) cerr<<(#a)<<": "<<(a)<<"\n"
#define debug2(a,b) cerr<<(#a)<<": "<<(a)<<", "<<(#b)<<": "<<(b)<<"\n"
#define debug3(a,b,c) cerr<<(#a)<<": "<<(a)<<", "<<(#b)<<": "<<(b)<<", "<<(#c)<<": "<<(c)<<"\n"
#define debug4(a,b,c,d) cerr<<(#a)<<": "<<(a)<<", "<<(#b)<<": "<<(b)<<", "<<(#c)<<": "<<(c)<<", "<<(#d)<<": "<<(d)<<"\n"

/*
#define debug1(a) cout<<#a<<": "<<a<<"\n"
#define debug2(a,b) cout<<#a<<": "<<a<<", "<<#b<<": "<<b<<"\n"
#define debug3(a,b,c) cout<<#a<<": "<<a<<", "<<#b<<": "<<b<<", "<<#c<<": "<<c<<"\n"
#define debug4(a,b,c,d) cout<<#a<<": "<<a<<", "<<#b<<": "<<b<<", "<<#c<<": "<<c<<", "<<#d<<": "<<d<<"\n"
*/

#define debug(...) overload4(__VA_ARGS__,debug4,debug3,debug2,debug1)(__VA_ARGS__)
#define koko cerr << "koko\n";
#else
#define debug(...) void(0)
#define pass(...) void(0);
#define koko void(0);
#endif
#define mp make_pair
#define ten(d) int64_t(1e##d)
struct asdfghjkl{asdfghjkl(){ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);}} qwertyuiop;
void doset(int n){cout << fixed << setprecision(n);cerr << fixed << setprecision(n);}
using ll = long long;
using ld = long double;
using dou = double;
template<class First,class Second>ostream& operator<<(ostream& os,const pair<First,Second>& pp)
{return os << "{" << pp.first << "," << pp.second << "}";}
template<class T>ostream& operator<<(ostream& os,const vector<T>& VV)
{if(VV.empty())return os<<"[]";os<<"[";rep(i,VV.size())os<<VV[i]<<(i==int(VV.size()-1)?"]":",");return os;}
template<class T>ostream& operator<<(ostream& os,const set<T>& SS)
{if(SS.empty())return os<<"[]";os<<"[";auto ii=SS.begin();for(;ii!=SS.end();ii++)os<<*ii<<(ii==prev(SS.end())?"]":",");return os;}
template<class Key,class Tp>ostream& operator<<(ostream& os,const map<Key,Tp>& MM)
{if(MM.empty())return os<<"[]";os<<"[";auto ii=MM.begin();for(;ii!=MM.end();ii++)os<<"{"<<ii->first<<":"<<ii->second<<"}"<<(ii==prev(MM.end())?"]":",");return os;}
constexpr int inf = 1 << 30;
constexpr ll INF = 1LL << 61;
constexpr ld pi = 3.14159265358;
constexpr ll mod1 = 1000000007LL;
constexpr ll mod2 = 998244353LL;
using pll = pair<ll,ll>;
using pli = pair<ll,int>;
using pii = pair<int,int>;
template<class T, class U> inline bool chmin(T& a, const U& b){ if(a > b){ a = b; return 1; } return 0; }
template<class T, class U> inline bool chmax(T& a, const U& b){ if(a < b){ a = b; return 1; } return 0; }
ll modpow(ll n,ll m,ll MOD){
    if(m == 0)return 1;
    if(m < 0)return 0;
    ll res = 1;
    n %= MOD;
    while(m){
        if(m & 1)res = (res * n) % MOD;
        m >>= 1;
        n *= n;
        n %= MOD;
    }
    return res;
}
ll mypow(ll n,ll m){
    if(m == 0)return 1;
    if(m < 0)return -1;
    ll res = 1;
    while(m){
        if(m & 1)res = (res * n);
        m >>= 1;
        n *= n;
    }
    return res;
}

inline bool isp(ll n){
    bool res = true;
    if(n == 1 || n == 0)return false;
    else{
        for(ll i = 2;i * i <= n;i++){
            if(n % i == 0){
                res = false;
                break;
            }
        }
        return res;
    }
}
inline bool Yes(bool b = 1){cout << (b ? "Yes\n":"No\n");return b;}
inline bool YES(bool b = 1){cout << (b ? "YES\n":"NO\n");return b;}
map<ll,ll> primefactor(ll n){
    map<ll,ll> ma;
    if(n <= 1)return ma;
    ll m = n;
    for(ll i = 2;i * i <= n;i++){
        while(m % i == 0){
            ma[i]++;
            m /= i;
        }
    }
    if(m != 1)ma[m]++;
    return ma;
}
vector<ll> divisor(ll n,bool sorted = true,bool samein = false){
    vector<ll> res;
    for(ll i = 1;i * i <= n;i++){
        if(n % i == 0){
            res.push_back(i);
            if(i * i != n || samein)res.push_back(n / i);
        }
    }
    if(sorted)sort(all(res));
    return res;
}

ll __lcm(ll a,ll b){return a / __gcd(a,b) * b;}

template<class T>T sum(const vector<T> &V){T r=0;for(auto x:V)r+=x;return r;}
template<class T>T sum(const initializer_list<T> &V){T r=0;for(auto x:V)r+=x;return r;}


namespace fastio{
    static constexpr size_t buf_size = 1 << 18;
    static constexpr size_t integer_size = 20;
    static constexpr size_t block_size = 10000;

    static char inbuf[buf_size + 1] = {};
    static char outbuf[buf_size + 1] = {};
    static char block_str[block_size * 4 + 1] = {};

    static constexpr uint64_t power10[] = {
        1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000,
        1000000000, 10000000000, 100000000000, 1000000000000, 10000000000000,
        100000000000000, 1000000000000000, 10000000000000000, 100000000000000000,
        1000000000000000000, 10000000000000000000u
    };

    struct Scanner {
        private:
        size_t pos,end;

        void load() {
            end = fread(inbuf,1,buf_size,stdin);
            inbuf[end] = '\0';
        }
        void reload() {
            size_t len = end - pos;
            memmove(inbuf,inbuf + pos,len);
            end = len + fread(inbuf + len,1,buf_size - len,stdin);
            inbuf[end] = '\0';
            pos = 0;
        }
        void skip_space() {
            while(inbuf[pos] <= ' '){
                if(__builtin_expect(++pos == end, 0)) reload();
            }
        }
        char get_next() { return inbuf[pos++]; }
        char get_next_nonspace() {
            skip_space();
            return inbuf[pos++];
        }
        public:
        Scanner() { load(); }

        void scan(char& c) { c = get_next_nonspace(); }
        void scan(std::string& s){
            skip_space();
            s = "";
            do {
                size_t start = pos;
                while (inbuf[pos] > ' ') pos++;
                s += std::string(inbuf + start, inbuf + pos);
                if (inbuf[pos] !='\0') break;
                reload();
            } while (true);
        }

        template <class T>
        typename std::enable_if<std::is_integral<T>::value, void>::type scan(T &x) {
            char c = get_next_nonspace();
            if(__builtin_expect(pos + integer_size >= end, 0)) reload();
            bool neg = false;
            if (c == '-') neg = true, x = 0;
            else x = c & 15;
            while ((c = get_next()) >= '0') x = x * 10 + (c & 15);
            if (neg) x = -x;
        }

        template <class Head, class... Others>
        void scan(Head& head, Others&... others) {
            scan(head); scan(others...);
        }

        template <class T>
        Scanner& operator >> (T& x) {
            scan(x); return *this;
        }
    };

    struct Printer {
        private:
        size_t pos = 0;
        
        void flush() {
            fwrite(outbuf, 1, pos, stdout);
            pos = 0;
        }

        void pre_calc() {
            for (size_t i = 0; i < block_size; i++) {
                size_t j = 4, k = i;
                while (j--) {
                    block_str[i * 4 + j] = k % 10 + '0';
                    k /= 10;
                }
            }
        }

        static constexpr size_t get_integer_size(uint64_t n) {
            if(n >= power10[10]) {
                if (n >= power10[19]) return 20;
                if (n >= power10[18]) return 19;
                if (n >= power10[17]) return 18;
                if (n >= power10[16]) return 17;
                if (n >= power10[15]) return 16;
                if (n >= power10[14]) return 15;
                if (n >= power10[13]) return 14;
                if (n >= power10[12]) return 13;
                if (n >= power10[11]) return 12;
                return 11;
            }
            else {
                if (n >= power10[9]) return 10;
                if (n >= power10[8]) return 9;
                if (n >= power10[7]) return 8;
                if (n >= power10[6]) return 7;
                if (n >= power10[5]) return 6;
                if (n >= power10[4]) return 5;
                if (n >= power10[3]) return 4;
                if (n >= power10[2]) return 3;
                if (n >= power10[1]) return 2;
                return 1;
            }
        }

        public:
        Printer() { pre_calc(); }
        ~Printer() { flush(); }

        void print(char c){
            outbuf[pos++] = c;
            if (__builtin_expect(pos == buf_size, 0)) flush();
        }
        void print(const char *s) {
            while(*s != 0) {
                outbuf[pos++] = *s++;
                // if (pos == buf_size) flush();
                if (__builtin_expect(pos == buf_size, 0)) flush();
            }
        }
        void print(const std::string& s) {
            for(auto c : s){
                outbuf[pos++] = c;
                // if (pos == buf_size) flush();
                if (__builtin_expect(pos == buf_size, 0)) flush();
            }
        }

        template <class T>
        typename std::enable_if<std::is_integral<T>::value, void>::type print(T x) {
            if (__builtin_expect(pos + integer_size >= buf_size, 0)) flush();
            if (x < 0) print('-'), x = -x;
            size_t digit = get_integer_size(x);
            size_t len = digit;
            while (len >= 4) {
                len -= 4;
                memcpy(outbuf + pos + len, block_str + (x % block_size) * 4, 4);
                x /= block_size;
            }
            memcpy(outbuf + pos, block_str + x * 4 + (4 - len), len);
            pos += digit;
        }

        template <class Head, class... Others>
        void print(const Head& head, const Others&... others){
            print(head); print(' '); print(others...);
        }

        template <class... Args>
        void println(const Args&... args) {
            print(args...); print('\n');
        }
        
        template <class T>
        Printer& operator << (const T& x) {
            print(x); return *this;
        }
    };
};

#ifndef _SORAIE
fastio::Scanner fin;
fastio::Printer fout;
#define cin fin
#define cout fout
#endif

#if __has_include("atcoder/all")
#include <atcoder/all>
using namespace atcoder;
template<int m,class OS>
OS& operator<<(OS& os,const static_modint<m>& self){os << self.val();return os;}
#endif

// #include <boost/multiprecision/cpp_dec_float.hpp>
// using lld = boost::multiprecision::number<boost::multiprecision::cpp_dec_float<20>>;

// #include <boost/multiprecision/cpp_int.hpp>
// using lll = boost::multiprecision::cpp_int;

//--------------------------------------------------------------------


int main(){
    using mint = modint1000000007;
    int N,S,K;
    cin >> N >> S >> K;
    int M = S - K * (N * (N - 1) / 2);
    if(M < 0){
        cout << "0\n";
        return 0;
    }
    vector<vector<mint>> memo(M + 1,vector<mint>(N + 1));
    rep(i,M + 1)memo[i][0] = 0;
    rep(i,N + 1)memo[0][i] = 1;
    rep(i,1,M + 1){
        rep(j,1,N + 1){
            memo[i][j] = (i - j >= 0 ? memo[i - j][j] : 0) + memo[i][j - 1];
        }
    }
    cout << memo[M][N] << "\n";
}
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