結果
問題 | No.1194 Replace |
ユーザー |
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提出日時 | 2025-03-19 14:06:00 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,121 ms / 2,000 ms |
コード長 | 4,299 bytes |
コンパイル時間 | 3,847 ms |
コンパイル使用メモリ | 196,436 KB |
実行使用メモリ | 79,816 KB |
最終ジャッジ日時 | 2025-03-19 14:06:25 |
合計ジャッジ時間 | 22,789 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 27 |
ソースコード
#include <algorithm>#include <atcoder/all>#include <bitset>#include <cassert>#include <cmath>#include <ctime>#include <functional>#include <iomanip>#include <iostream>#include <map>#include <queue>#include <random>#include <set>#include <stack>#include <string>#include <tuple>#include <unordered_map>#include <unordered_set>#include <utility>#include <vector>using namespace std;using namespace atcoder;typedef long long ll;#define rep(i, n) for (int i = 0; i < (int)(n); i++)#define repr(i, n) for (int i = (int)(n) - 1; i >= 0; i--)#define repk(i, k, n) for (int i = k; i < (int)(n); i++)#define all(v) v.begin(), v.end()#define mod1 1000000007#define mod2 998244353#define mod3 100000007#define vi vector<int>#define vs vector<string>#define vc vector<char>#define vl vector<ll>#define vb vector<bool>#define vvi vector<vector<int>>#define vvc vector<vector<char>>#define vvl vector<vector<ll>>#define vvb vector<vector<bool>>#define vvvi vector<vector<vector<int>>>#define vvvl vector<vector<vector<ll>>>#define pii pair<int, int>#define pil pair<int, ll>#define pli pair<ll, int>#define pll pair<ll, ll>#define vpii vector<pair<int, int>>#define vpll vector<pair<ll, ll>>#define vvpii vector<vector<pair<int, int>>>#define vvpll vector<vector<pair<ll, ll>>>// using mint = modint998244353;template <typename T>void debug(T e) {cerr << e << endl;}template <typename T>void debug(vector<T> &v) {rep(i, v.size()) { cerr << v[i] << " "; }cerr << endl;}template <typename T>void debug(vector<vector<T>> &v) {rep(i, v.size()) {rep(j, v[i].size()) { cerr << v[i][j] << " "; }cerr << endl;}}template <typename T>void debug(vector<pair<T, T>> &v) {rep(i, v.size()) { cerr << v[i].first << " " << v[i].second << endl; }}template <typename T>void debug(set<T> &st) {for (auto itr = st.begin(); itr != st.end(); itr++) {cerr << *itr << " ";}cerr << endl;}template <typename T>void debug(multiset<T> &ms) {for (auto itr = ms.begin(); itr != ms.end(); itr++) {cerr << *itr << " ";}cerr << endl;}template <typename T>void debug(map<T, T> &mp) {for (auto itr = mp.begin(); itr != mp.end(); itr++) {cerr << itr->first << " " << itr->second << endl;}}void debug_out() { cerr << endl; }template <typename Head, typename... Tail>void debug_out(Head H, Tail... T) {cerr << H << " ";debug_out(T...);}using mint = modint998244353;int main() {ll N, M;cin >> N >> M;vector<ll> B(M);vector<ll> C(M);for (ll i = 0; i < M; i++) {cin >> B[i] >> C[i];}map<ll, ll> mp;ll now = 0;for (ll i = 0; i < M; i++) {mp[B[i]]++;mp[C[i]]++;}for (auto itr = mp.begin(); itr != mp.end(); itr++) {itr->second = now;now++;}vector<ll> rev(now);for (auto itr = mp.begin(); itr != mp.end(); itr++) {rev[itr->second] = itr->first;}scc_graph graph(now);// SCC して末端から順番に dp することで最終的な値がわかりそうfor (ll i = 0; i < M; i++) {graph.add_edge(mp[B[i]], mp[C[i]]);}vector<vector<int>> sgraph = graph.scc();ll len = sgraph.size();vector<ll> belong(now);for (ll i = 0; i < len; i++) {for (ll x : sgraph[i]) {belong[x] = i;}}// 連結成分ごとにまとめたグラフを作るvector<vector<ll>> mgraph(len, vector<ll>(0));for (ll i = 0; i < M; i++) {if (belong[mp[B[i]]] != belong[mp[C[i]]]) {mgraph[belong[mp[B[i]]]].push_back(belong[mp[C[i]]]);}}vector<ll> dp(len, 0);// とりあえず max でまとめておくfor (ll i = 0; i < len; i++) {for (ll x : sgraph[i]) {dp[i] = max(dp[i], rev[x]);}}for (ll i = len - 1; i >= 0; i--) {for (ll x : mgraph[i]) {dp[i] = max(dp[i], dp[x]);}}ll ans = N * (N + 1) / 2;ll all_sum = 0;for (ll i = 0; i < now; i++) {all_sum += rev[i];}ans -= all_sum;for (ll i = 0; i < len; i++) {ans += (ll)sgraph[i].size() * dp[i];}cout << ans << endl;}