結果
問題 | No.1596 Distance Sum in 2D Plane |
ユーザー |
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提出日時 | 2021-07-09 22:17:53 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 238 ms / 2,000 ms |
コード長 | 2,041 bytes |
コンパイル時間 | 2,288 ms |
コンパイル使用メモリ | 196,920 KB |
最終ジャッジ日時 | 2025-01-22 22:03:05 |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 17 |
ソースコード
/*-------------- | /| | /| | /| * |/ | | ------ *| | | | / \| | |\ | | | |\ |\ | | | \ | | | | \ |\ | | | \ | | \ / \ |V | | \ \__/| ----- \ |*/#include <bits/stdc++.h>using namespace std;#define debug(x) cerr << "\e[1;31m" << #x << " = " << (x) << "\e[0m\n"#define print(x) emilia_mata_tenshi(#x, begin(x), end(x))template<typename T> void emilia_mata_tenshi(const char *s, T l, T r) {cerr << "\e[1;33m" << s << " = [";while(l != r) {cerr << *l;cerr << (++l == r ? ']' : ',');}cerr << "\e[0m\n";}#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(NULL);using ll = int64_t;using ull = uint64_t;using ld = long double;using uint = uint32_t;const double EPS = 1e-8;const int INF = 0x3F3F3F3F;const ll LINF = 4611686018427387903;const int MOD = 1e9+7;/*--------------------------------------------------------------------------------------*/signed main() { EmiliaMyWifeint n, m;cin >> n >> m;vector<ll> fac(n * 2 + 3, 1);for(int i = 1; i <= n * 2 + 2; i++)fac[i] = fac[i - 1] * i % MOD;auto mpow = [&](ll a, int b) {ll res = 1;for(; b; b >>= 1, a = a * a % MOD)if(b & 1)res = res * a % MOD;return res;};auto cnm = [&](int n, int m) {if(n < m)return ll(0);return fac[n] * mpow(fac[m], MOD - 2) % MOD * mpow(fac[n - m], MOD - 2) % MOD;};auto cal = [&](int a, int b) { return cnm(a + b, a); };ll ans = cal(n, n) * n * 2 % MOD;//debug(ans);while(m--) {int t, x, y;cin >> t >> x >> y;int dx = x, dy = y;if(t == 1)dx++;elsedy++;ans = (ans - cal(x, y) * cal(n - dx, n - dy) % MOD + MOD) % MOD;}cout << ans << '\n';}