結果

問題 No.1336 Union on Blackboard
ユーザー firiexp
提出日時 2021-01-15 21:22:53
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3 ms / 2,000 ms
コード長 2,505 bytes
コンパイル時間 890 ms
コンパイル使用メモリ 99,132 KB
最終ジャッジ日時 2025-01-17 18:29:54
ジャッジサーバーID
(参考情報)
judge2 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 1
other AC * 31
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 ‘void solve()’:
main.cpp:53:29: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   53 |     for (auto &&i : v) scanf("%d", &i);
      |                        ~~~~~^~~~~~~~~~

ソースコード

diff #
プレゼンテーションモードにする

#include <iostream>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <numeric>
#include <bitset>
#include <cmath>
static const int MOD = 1000000007;
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>
struct modint {
u32 val;
public:
static modint raw(int v) { modint x; x.val = v; return x; }
modint() : val(0) {}
template <class T>
modint(T v) { ll x = (ll)(v%(ll)(M)); if (x < 0) x += M; val = u32(x); }
modint(bool v) { val = ((unsigned int)(v) % M); }
modint& operator++() { val++; if (val == M) val = 0; return *this; }
modint& operator--() { if (val == 0) val = M; val--; return *this; }
modint operator++(int) { modint result = *this; ++*this; return result; }
modint operator--(int) { modint result = *this; --*this; return result; }
modint& operator+=(const modint& b) { val += b.val; if (val >= M) val -= M; return *this; }
modint& operator-=(const modint& b) { val -= b.val; if (val >= M) val += M; return *this; }
modint& operator*=(const modint& b) { u64 z = val; z *= b.val; val = (u32)(z % M); return *this; }
modint& operator/=(const modint& b) { return *this = *this * b.inv(); }
modint operator+() const { return *this; }
modint operator-() const { return modint() - *this; }
modint pow(long long n) const { modint x = *this, r = 1; while (n) { if (n & 1) r *= x; x *= x; n >>= 1; } return r; }
modint inv() const { return pow(M-2); }
friend modint operator+(const modint& a, const modint& b) { return modint(a) += b; }
friend modint operator-(const modint& a, const modint& b) { return modint(a) -= b; }
friend modint operator*(const modint& a, const modint& b) { return modint(a) *= b; }
friend modint operator/(const modint& a, const modint& b) { return modint(a) /= b; }
friend bool operator==(const modint& a, const modint& b) { return a.val == b.val; }
friend bool operator!=(const modint& a, const modint& b) { return a.val != b.val; }
};
using mint = modint<MOD>;
void solve(){
int n;
cin >> n;
vector<int> v(n);
for (auto &&i : v) scanf("%d", &i);
mint a = (v[0]+1)*(v[1]+1)-1;
for (int i = 2; i < n; ++i) {
a = (a+1)*(v[i]+1)-1;
}
cout << a.val << "\n";
}
int main() {
int t;
cin >> t;
while(t--){
solve();
}
return 0;
}
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