結果
| 問題 | No.1014 competitive fighting |
| コンテスト | |
| ユーザー |
ei1333333
|
| 提出日時 | 2020-03-20 22:12:10 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 757 ms / 2,000 ms |
| コード長 | 5,493 bytes |
| コンパイル時間 | 3,311 ms |
| コンパイル使用メモリ | 223,868 KB |
| 最終ジャッジ日時 | 2025-01-09 08:37:58 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 51 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using int64 = long long;
const int mod = 1e9 + 7;
// const int mod = 998244353;
const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;
struct IoSetup {
IoSetup() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
}
} iosetup;
template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {
os << p.first << " " << p.second;
return os;
}
template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
is >> p.first >> p.second;
return is;
}
template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
for(int i = 0; i < (int) v.size(); i++) {
os << v[i] << (i + 1 != v.size() ? " " : "");
}
return os;
}
template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
for(T &in : v) is >> in;
return is;
}
template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
template< typename T = int64 >
vector< T > make_v(size_t a) {
return vector< T >(a);
}
template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}
template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
t = v;
}
template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
for(auto &e : t) fill_v(e, v);
}
template< typename F >
struct FixPoint : F {
FixPoint(F &&f) : F(forward< F >(f)) {}
template< typename... Args >
decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, forward< Args >(args)...);
}
};
template< typename F >
inline decltype(auto) MFP(F &&f) {
return FixPoint< F >{forward< F >(f)};
}
template< typename T >
struct edge {
int src, to;
T cost;
edge(int to, T cost) : src(-1), to(to), cost(cost) {}
edge(int src, int to, T cost) : src(src), to(to), cost(cost) {}
edge &operator=(const int &x) {
to = x;
return *this;
}
operator int() const { return to; }
};
template< typename T >
using Edges = vector< edge< T > >;
template< typename T >
using WeightedGraph = vector< Edges< T > >;
using UnWeightedGraph = vector< vector< int > >;
template< typename T >
using Matrix = vector< vector< T > >;
template< typename G >
struct StronglyConnectedComponents {
const G &g;
UnWeightedGraph gg, rg;
vector< int > comp, order, used;
StronglyConnectedComponents(G &g) : g(g), gg(g.size()), rg(g.size()), comp(g.size(), -1), used(g.size()) {
for(int i = 0; i < g.size(); i++) {
for(auto e : g[i]) {
gg[i].emplace_back((int) e);
rg[(int) e].emplace_back(i);
}
}
}
int operator[](int k) {
return comp[k];
}
void dfs(int idx) {
if(used[idx]) return;
used[idx] = true;
for(int to : gg[idx]) dfs(to);
order.push_back(idx);
}
void rdfs(int idx, int cnt) {
if(comp[idx] != -1) return;
comp[idx] = cnt;
for(int to : rg[idx]) rdfs(to, cnt);
}
void build(UnWeightedGraph &t) {
for(int i = 0; i < gg.size(); i++) dfs(i);
reverse(begin(order), end(order));
int ptr = 0;
for(int i : order) if(comp[i] == -1) rdfs(i, ptr), ptr++;
t.resize(ptr);
for(int i = 0; i < g.size(); i++) {
for(auto &to : g[i]) {
int x = comp[i], y = comp[to];
if(x == y) continue;
t[x].push_back(y);
}
}
}
};
int main() {
int N;
cin >> N;
vector< int > A(N), B(N), C(N);
for(int i = 0; i < N; i++) {
cin >> A[i] >> B[i] >> C[i];
}
vector< int > xs;
for(int i = 0; i < N; i++) {
xs.emplace_back(A[i]);
xs.emplace_back(B[i] - C[i]);
}
sort(begin(xs), end(xs));
xs.erase(unique(begin(xs), end(xs)), end(xs));
int M = (int) xs.size();
WeightedGraph< int64 > g(M + N);
for(int i = 1; i < xs.size(); i++) {
g[i].emplace_back(i - 1, 0);
}
for(int i = 0; i < N; i++) {
{
int p = lower_bound(begin(xs), end(xs), B[i] - C[i]) - begin(xs);
g[M + i].emplace_back(p, B[i]);
}
{
int p = lower_bound(begin(xs), end(xs), A[i]) - begin(xs);
g[p].emplace_back(M + i, 0);
}
}
StronglyConnectedComponents< WeightedGraph< int64 > > scc(g);
UnWeightedGraph t;
scc.build(t);
auto dp = make_v< int64 >(t.size());
fill_v(dp, -1);
vector< int64 > sz(t.size());
map< int, int > mx[404040];
for(int i = 0; i < N; i++) {
sz[scc[i + M]]++;
{
int p = lower_bound(begin(xs), end(xs), B[i] - C[i]) - begin(xs);
chmax(mx[scc[i + M]][scc[p]], B[i]);
}
}
auto dfs = MFP([&](auto dfs, int idx) -> int64 {
if(~dp[idx]) return dp[idx];
int64 ret = 0;
for(auto &to : t[idx]) chmax(ret, dfs(to) + mx[idx][to]);
ret += mx[idx][idx];
if(sz[idx] >= 2) ret = infll;
return dp[idx] = min(ret, infll);
});
for(int i = 0; i < N; i++) {
auto ret = dfs(scc[M + i]);
if(ret >= infll) cout << "BAN" << endl;
else cout << ret << endl;
}
// A[j] <= B[i]-C[i] なら i->j に有向辺を張る
// 閉路にぶつかればBAN
// 但し自分自身には行けません
// 倍長して適当にやる
// ぶつからなければ普通にmaxをとります
}
ei1333333