結果
| 問題 |
No.1341 真ん中を入れ替えて門松列
|
| コンテスト | |
| ユーザー |
SSRS
|
| 提出日時 | 2021-01-15 23:05:59 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,175 bytes |
| コンパイル時間 | 1,975 ms |
| コンパイル使用メモリ | 188,496 KB |
| 実行使用メモリ | 11,836 KB |
| 最終ジャッジ日時 | 2024-11-26 17:13:59 |
| 合計ジャッジ時間 | 34,153 ms |
|
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 * 4 WA * 1 |
| other | AC * 2 WA * 1 TLE * 11 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
const long long MAX = 1000000000;
const long long INF = 1000000000000000;
const long long INF2 = 10000;
template <typename Cap, typename Cost>
struct primal_dual{
struct edge{
int to, rev;
Cap cap;
Cost cost;
edge(int to, int rev, Cap cap, Cost cost): to(to), rev(rev), cap(cap), cost(cost){
}
};
int N;
vector<vector<edge>> G;
primal_dual(){
}
primal_dual(int N): N(N), G(N){
}
void add_edge(int from, int to, Cap cap, Cost cost){
int id1 = G[from].size();
int id2 = G[to].size();
G[from].push_back(edge(to, id2, cap, cost));
G[to].push_back(edge(from, id1, 0, - cost));
}
pair<Cap, Cost> min_cost_flow(int s, int t, Cap F){
Cap flow = 0;
Cost cost = 0;
vector<Cost> h(N, 0);
while (flow < F){
vector<Cap> m(N, INF2);
vector<Cost> d(N, INF);
vector<int> pv(N, -1);
vector<int> pe(N, -1);
vector<bool> used(N, false);
priority_queue<pair<Cost, int>, vector<pair<Cost, int>>, greater<pair<Cost, int>>> pq;
pq.push(make_pair(0, s));
d[s] = 0;
while (!pq.empty()){
int v = pq.top().second;
pq.pop();
if (!used[v]){
used[v] = true;
if (v == t){
break;
}
int cnt = G[v].size();
for (int i = 0; i < cnt; i++){
int w = G[v][i].to;
if (!used[w] && G[v][i].cap > 0){
Cost tmp = G[v][i].cost - h[w] + h[v];
if (d[w] > d[v] + tmp){
d[w] = d[v] + tmp;
m[w] = min(m[v], G[v][i].cap);
pv[w] = v;
pe[w] = i;
pq.push(make_pair(d[w], w));
}
}
}
}
}
if (!used[t]){
break;
}
for (int i = 0; i < N; i++){
if (used[i]){
h[i] -= d[t] - d[i];
}
}
Cap c = min(m[t], F - flow);
for (int i = t; i != s; i = pv[i]){
G[pv[i]][pe[i]].cap -= c;
G[i][G[pv[i]][pe[i]].rev].cap += c;
}
flow += c;
cost += c * (- h[s]);
}
return make_pair(flow, cost);
}
};
int main(){
int N;
long long M;
cin >> N >> M;
vector<int> A(N), B(N), C(N);
for (int i = 0; i < N; i++){
cin >> A[i] >> B[i] >> C[i];
if (A[i] == C[i]){
cout << "NO" << endl;
return 0;
}
}
sort(B.begin(), B.end());
primal_dual<int, long long> G(N * 4 + 2);
int s = N * 4, t = N * 4 + 1;
for (int i = 0; i < N; i++){
int L = lower_bound(B.begin(), B.end(), min(A[i], C[i])) - B.begin();
int R = upper_bound(B.begin(), B.end(), max(A[i], C[i])) - B.begin();
G.add_edge(s, i, 1, 0);
if (L > 0){
G.add_edge(i, N + L - 1, 1, MAX - C[i]);
}
if (R < N){
G.add_edge(i, N * 2 + R, 1, 0);
}
}
for (int i = 0; i < N; i++){
G.add_edge(N + i, N * 3 + i, 1, 0);
G.add_edge(N * 2 + i, N * 3 + i, 1, MAX - B[i]);
G.add_edge(N * 3 + i, t, 1, 0);
}
for (int i = 0; i < N - 1; i++){
G.add_edge(N + i + 1, N + i, N, 0);
G.add_edge(N * 2 + i, N * 2 + i + 1, N, 0);
}
pair<int, long long> ans = G.min_cost_flow(s, t, N);
if (ans.first < N){
cout << "NO" << endl;
} else {
cout << "YES" << endl;
long long sum = MAX * N - ans.second;
if (sum >= M){
cout << "KADOMATSU!" << endl;
} else {
cout << "NO" << endl;
}
}
}
SSRS