結果

問題 No.1066 #いろいろな色 / Red and Blue and more various colors (Easy)
コンテスト
ユーザー firiexp
提出日時 2020-05-29 21:46:01
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 212 ms / 2,000 ms
コード長 2,198 bytes
コンパイル時間 826 ms
コンパイル使用メモリ 100,132 KB
最終ジャッジ日時 2025-01-10 16:51:52
ジャッジサーバーID
（参考情報） 		judge3 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 24
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:60:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   60 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~
main.cpp:70:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   70 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~

ソースコード

diff # 

#include <iostream>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <numeric>
#include <bitset>
#include <cmath>

static const int MOD = 998244353;
using ll = long long;
using u32 = unsigned;
using u64 = unsigned long long;
using namespace std;

template<class T> constexpr T INF = ::numeric_limits<T>::max()/32*15+208;

template<u32 M = 1000000007>
struct modint{
    u32 val;
    modint(): val(0){}
    template<typename T>
    modint(T t){t %= (T)M; if(t < 0) t += (T)M; val = t;}

    modint pow(ll k) const {
        modint res(1), x(val);
        while(k){
            if(k&1) res *= x;
            x *= x;
            k >>= 1;
        }
        return res;
    }
    template<typename T>
    modint& operator=(T t){t %= (T)M; if(t < 0) t += (T)M; val = t; return *this;}
    modint inv() const {return pow(M-2);}
    modint& operator+=(modint a){val += a.val; if(val >= M) val -= M; return *this;}
    modint& operator-=(modint a){if(val < a.val) val += M-a.val; else val -= a.val; return *this;}
    modint& operator*=(modint a){val = (u64)val*a.val%M; return *this;}
    modint& operator/=(modint a){return (*this) *= a.inv();}
    modint operator+(modint a) const {return modint(val) +=a;}
    modint operator-(modint a) const {return modint(val) -=a;}
    modint operator*(modint a) const {return modint(val) *=a;}
    modint operator/(modint a) const {return modint(val) /=a;}
    modint operator-(){return modint(M-val);}
    bool operator==(const modint a) const {return val == a.val;}
    bool operator!=(const modint a) const {return val != a.val;}
    bool operator<(const modint a) const {return val < a.val;}
};
using mint = modint<MOD>;

int main() {
    int n, q;
    cin >> n >> q;
    vector<mint> dp(n+1), dp2(n+1);
    dp[0] = 1;
    for (int i = 0; i < n; ++i) {
        int x;
        scanf("%d", &x);
        fill(dp2.begin(),dp2.end(), mint(0));
        for (int j = 0; j < n; ++j) {
            dp2[j+1] += dp[j];
            dp2[j] += dp[j]*mint(x-1);
        }
        swap(dp, dp2);
    }
    for (int i = 0; i < q; ++i) {
        int x;
        scanf("%d", &x);
        printf("%d\n", dp[x].val);
    }
    return 0;
}
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