結果

問題 No.1773 Love Triangle
ユーザー oteraotera
提出日時 2021-12-07 00:10:36
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 205 ms / 2,000 ms
コード長 5,644 bytes
コンパイル時間 2,086 ms
コンパイル使用メモリ 213,264 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-07-07 09:52:58
合計ジャッジ時間 12,445 ms
ジャッジサーバーID
(参考情報)
judge3 / judge5
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 1 ms
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 2 ms
6,940 KB
testcase_03 AC 1 ms
6,948 KB
testcase_04 AC 1 ms
6,940 KB
testcase_05 AC 1 ms
6,944 KB
testcase_06 AC 1 ms
6,944 KB
testcase_07 AC 2 ms
6,940 KB
testcase_08 AC 1 ms
6,944 KB
testcase_09 AC 2 ms
6,940 KB
testcase_10 AC 2 ms
6,944 KB
testcase_11 AC 1 ms
6,940 KB
testcase_12 AC 2 ms
6,944 KB
testcase_13 AC 1 ms
6,940 KB
testcase_14 AC 2 ms
6,944 KB
testcase_15 AC 2 ms
6,940 KB
testcase_16 AC 1 ms
6,940 KB
testcase_17 AC 2 ms
6,944 KB
testcase_18 AC 117 ms
6,940 KB
testcase_19 AC 3 ms
6,944 KB
testcase_20 AC 9 ms
6,944 KB
testcase_21 AC 1 ms
6,944 KB
testcase_22 AC 10 ms
6,944 KB
testcase_23 AC 7 ms
6,940 KB
testcase_24 AC 16 ms
6,944 KB
testcase_25 AC 29 ms
6,940 KB
testcase_26 AC 2 ms
6,940 KB
testcase_27 AC 2 ms
6,940 KB
testcase_28 AC 2 ms
6,940 KB
testcase_29 AC 1 ms
6,944 KB
testcase_30 AC 84 ms
6,940 KB
testcase_31 AC 20 ms
6,944 KB
testcase_32 AC 10 ms
6,940 KB
testcase_33 AC 4 ms
6,944 KB
testcase_34 AC 2 ms
6,944 KB
testcase_35 AC 2 ms
6,944 KB
testcase_36 AC 25 ms
6,940 KB
testcase_37 AC 1 ms
6,940 KB
testcase_38 AC 187 ms
6,940 KB
testcase_39 AC 187 ms
6,944 KB
testcase_40 AC 188 ms
6,940 KB
testcase_41 AC 200 ms
6,944 KB
testcase_42 AC 205 ms
6,940 KB
testcase_43 AC 195 ms
6,940 KB
testcase_44 AC 193 ms
6,944 KB
testcase_45 AC 184 ms
6,940 KB
testcase_46 AC 197 ms
6,940 KB
testcase_47 AC 198 ms
6,944 KB
testcase_48 AC 195 ms
6,944 KB
testcase_49 AC 193 ms
6,940 KB
testcase_50 AC 191 ms
6,944 KB
testcase_51 AC 199 ms
6,944 KB
testcase_52 AC 190 ms
6,944 KB
testcase_53 AC 192 ms
6,940 KB
testcase_54 AC 184 ms
6,944 KB
testcase_55 AC 196 ms
6,940 KB
testcase_56 AC 187 ms
6,940 KB
testcase_57 AC 197 ms
6,944 KB
testcase_58 AC 194 ms
6,940 KB
testcase_59 AC 195 ms
6,940 KB
testcase_60 AC 193 ms
6,944 KB
testcase_61 AC 194 ms
6,940 KB
testcase_62 AC 191 ms
6,940 KB
testcase_63 AC 191 ms
6,940 KB
testcase_64 AC 196 ms
6,940 KB
testcase_65 AC 192 ms
6,944 KB
testcase_66 AC 203 ms
6,940 KB
testcase_67 AC 194 ms
6,940 KB
testcase_68 AC 199 ms
6,944 KB
testcase_69 AC 194 ms
6,944 KB
testcase_70 AC 188 ms
6,940 KB
testcase_71 AC 196 ms
6,944 KB
testcase_72 AC 191 ms
6,940 KB
testcase_73 AC 198 ms
6,944 KB
testcase_74 AC 196 ms
6,944 KB
testcase_75 AC 203 ms
6,944 KB
testcase_76 AC 194 ms
6,940 KB
testcase_77 AC 189 ms
6,940 KB
testcase_78 AC 2 ms
6,940 KB
testcase_79 AC 2 ms
6,940 KB
testcase_80 AC 3 ms
6,944 KB
testcase_81 AC 112 ms
6,944 KB
testcase_82 AC 87 ms
6,940 KB
testcase_83 AC 39 ms
6,944 KB
testcase_84 AC 48 ms
6,940 KB
testcase_85 AC 60 ms
6,940 KB
testcase_86 AC 14 ms
6,944 KB
testcase_87 AC 32 ms
6,940 KB
testcase_88 AC 8 ms
6,940 KB
testcase_89 AC 22 ms
6,940 KB
testcase_90 AC 101 ms
6,940 KB
testcase_91 AC 74 ms
6,944 KB
testcase_92 AC 9 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 #

/**
 *    author:  otera
 *    created: 05.12.2021 23:25:44 
**/
#include<bits/stdc++.h>
#include<atcoder/modint>
using namespace std;

using ll = long long;
using ld = long double;
using ull = unsigned long long;
using uint = unsigned;
#define repa(i, n) for(int i = 0; i < n; ++ i)
#define repb(i, a, b) for(int i = a; i < b; ++ i)
#define repc(i, a, b, c) for(int i = a; i < b; i += c)
#define overload4(a, b, c, d, e, ...) e
#define rep(...) overload4(__VA_ARGS__, repc, repb, repa)(__VA_ARGS__)
#define rep1a(i, n) for(int i = 0; i <= n; ++ i)
#define rep1b(i, a, b) for(int i = a; i <= b; ++ i)
#define rep1c(i, a, b, c) for(int i = a; i <= b; i += c)
#define rep1(...) overload4(__VA_ARGS__, rep1c, rep1b, rep1a)(__VA_ARGS__)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define per1(i,n) for(int i=n;i>=1;i--)
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
#define pb push_back
#define eb emplace_back
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define lb(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define ub(c, x) distance((c).begin(), upper_bound(all(c), (x)))
#define Sort(a) sort(all(a))
#define Rev(a) reverse(all(a))
#define Uniq(a) sort(all(a));a.erase(unique(all(a)),end(a))
#define si(c) (int)(c).size()
inline ll popcnt(ull a){ return __builtin_popcountll(a); }
#define tpow(n) (1LL<<(n))
#define unless(A) if(!(A))
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll intpow(ll a, ll b, ll m) {ll ans = 1; while(b){ if(b & 1) (ans *= a) %= m; (a *= a) %= m; b /= 2; } return ans; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__;in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__;in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__;in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__;in(__VA_ARGS__)
#define vec(type,name,...) vector<type>name(__VA_ARGS__)
#define VEC(type,name,size) vector<type>name(size);in(name)
#define vv(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define VV(type,name,h,w) vector<vector<type>>name(h,vector<type>(w));in(name)
#define vvv(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
template <class T> using vc = vector<T>;
template <class T> using vvc = vector<vc<T>>;
template <class T> using vvvc = vector<vvc<T>>;
template <class T> using vvvvc = vector<vvvc<T>>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
template<class T> void scan(T& a){ cin >> a; }
template<class T> void scan(vector<T>& a){ for(auto&& i : a) scan(i); }
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){ scan(head); in(tail...); }
void print(){ cout << ' '; }
template<class T> void print(const T& a){ cout << a; }
template<class T> void print(const vector<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ cout << ' '; print(*i); } }
int out(){ cout << '\n'; return 0; }
template<class T> int out(const T& t){ print(t); cout << '\n'; return 0; }
template<class Head, class... Tail> int out(const Head& head, const Tail&... tail){ print(head); cout << ' '; out(tail...); return 0; }
#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0,a1,a2,a3,a4,x,...) x
#define debug_1(x1) cout<<#x1<<": "<<x1<<endl
#define debug_2(x1,x2) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<endl
#define debug_3(x1,x2,x3) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<endl
#define debug_4(x1,x2,x3,x4) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<endl
#define debug_5(x1,x2,x3,x4,x5) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<", "#x5<<": "<<x5<<endl
#ifdef DEBUG
#define debug(...) CHOOSE((__VA_ARGS__,debug_5,debug_4,debug_3,debug_2,debug_1,~))(__VA_ARGS__)
#define dump(...) { print(#__VA_ARGS__); print(":"); out(__VA_ARGS__); }
#else
#define debug(...)
#define dump(...)
#endif

using mint = atcoder::modint1000000007;

void solve() {
    random_device seed_gen;
    mt19937_64 rng(seed_gen());
    uniform_int_distribution<int> dist(1, 1'000'000'006);
    INT(n, m);
    vc<int> u(m), v(m), w(m);
    vvc<mint> A(n, vc<mint>(n, 0));
    rep(i, m) {
        in(u[i], v[i], w[i]);
        -- u[i], -- v[i], -- w[i];
        mint x = dist(rng);
        A[v[i]][u[i]] -= x;
        A[u[i]][w[i]] -= x;
        A[v[i]][w[i]] += x;
        A[u[i]][v[i]] += x;
        A[w[i]][u[i]] += x;
        A[w[i]][v[i]] -= x;
    }
    int rank = 0;
    rep(i, n) {
        int pivot = -1;
        for(int j = rank; j < n; ++ j) {
            if(A[j][i] != 0) {
                pivot = j;
                break;
            }
        }
        if(pivot == -1) continue;
        swap(A[rank], A[pivot]);
        mint fac = A[rank][i];
        rep(j, n) {
            A[rank][j] /= fac;
        }
        rep(j, n) {
            if(j != rank and A[j][i] != 0) {
                mint fac2 = A[j][i];
                rep(k, n) {
                    A[j][k] -= A[rank][k] * fac2;
                }
            }
        }
        ++ rank;
    }
    int ans = rank / 2;
    out(ans);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    // cout << fixed << setprecision(20);
    // INT(t); rep(i, t)solve();
    solve();
    return 0;
}
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