Submission #1330918
Source Code Expand
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
//---------------------------------------------------------------------------------------------------
template<int NV, class V> struct MinCostFlow {
struct edge { int to, capacity; V cost; int reve;
edge(int a, int b, V c, int d) { to = a; capacity = b; cost = c; reve = d; } };
vector<edge> E[NV];
int prev_v[NV], prev_e[NV]; V dist[NV];
void add_edge(int x, int y, int cap, V cost) {
E[x].push_back(edge(y, cap, cost, (int)E[y].size()));
E[y].push_back(edge(x, 0, -cost, (int)E[x].size() - 1)); /* rev edge */
}
V mincost(int from, int to, int flow) { // 流せないなら-1が返る
V res = 0; int i, v; rep(i, 0, NV) prev_v[i] = 0; rep(i, 0, NV) prev_e[i] = 0;
while (flow>0) {
fill(dist, dist + NV, numeric_limits<V>::max() / 2); dist[from] = 0;
priority_queue<pair<int, int> > Q; Q.push(make_pair(0, from));
while (Q.size()) { int d = -Q.top().first, cur = Q.top().second; Q.pop();
if (dist[cur] != d) continue; if (d == numeric_limits<V>::max() / 2) break;
rep(i, 0, E[cur].size()) {
edge &e = E[cur][i];
if (e.capacity>0 && dist[e.to]>d + e.cost) {
dist[e.to] = d + e.cost; prev_v[e.to] = cur; prev_e[e.to] = i;
Q.push(make_pair(-dist[e.to], e.to)); } } }
if (dist[to] == numeric_limits<V>::max() / 2) return -1; int lc = flow;
for (v = to; v != from; v = prev_v[v]) lc = min(lc, E[prev_v[v]][prev_e[v]].capacity);
flow -= lc; res += lc*dist[to];
for (v = to; v != from; v = prev_v[v]) { edge &e = E[prev_v[v]][prev_e[v]];
e.capacity -= lc; E[v][e.reve].capacity += lc; } } return res;}
};
/*---------------------------------------------------------------------------------------------------
∧_∧
∧_∧ (´<_` ) Welcome to My Coding Space!
( ´_ゝ`) / ⌒i
/ \ | |
/ / ̄ ̄ ̄ ̄/ |
__(__ニつ/ _/ .| .|____
\/____/ (u ⊃
---------------------------------------------------------------------------------------------------*/
int N, M;
pair<int, int> A[50], B[50];
int D[50];
//---------------------------------------------------------------------------------------------------
void _main() {
cin >> N >> M;
rep(i, 0, N) {
string s; int x, y;
cin >> s >> x >> y;
A[i] = { x, y };
}
map<int, vector<int>> dic;
rep(i, 0, M) {
string s; int m, x, y;
cin >> s >> m >> x >> y;
B[i] = { x, y };
D[i] = m;
dic[m].push_back(i);
}
int K = min(N, M);
int cnt = 0;
MinCostFlow<110, int> mcf;
int s = N + M, t = N + M + 1, tt = N + M + 2;
for (auto ite = dic.rbegin(); ite != dic.rend(); ite++) {
int ma = ite->first;
auto v = ite->second;
if (cnt + v.size() < K) {
for (int i : v) mcf.add_edge(i + N, t, 1, 0);
cnt += v.size();
}
else if (cnt < K) {
for (int i : v) mcf.add_edge(i + N, tt, 1, 0);
mcf.add_edge(tt, t, K - cnt, 0);
cnt += v.size();
}
}
rep(i, 0, N) mcf.add_edge(s, i, 1, 0);
rep(i, 0, N) rep(j, 0, M) {
int d = abs(A[i].first - B[j].first) + abs(A[i].second - B[j].second);
if (D[j] == 0) d = 0;
mcf.add_edge(i, j + N, 1, d);
}
cout << mcf.mincost(s, t, K) << endl;
}
Submission Info
Submission Time |
|
Task |
F - 3人の騎士と1匹の犬 |
User |
hamayanhamayan |
Language |
C++14 (GCC 5.4.1) |
Score |
100 |
Code Size |
3918 Byte |
Status |
AC |
Exec Time |
3 ms |
Memory |
384 KB |
Judge Result
Set Name |
All |
Score / Max Score |
100 / 100 |
Status |
|
Set Name |
Test Cases |
All |
00-sample, 01-minimum, 02-maximum, 50-random-00, 50-random-01, 50-random-02, 50-random-03, 50-random-04, 50-random-05, 50-random-06, 50-random-07, 50-random-08, 50-random-09, 50-random-10, 50-random-11, 50-random-12, 50-random-13, 50-random-14, 50-random-15, 50-random-16, 50-random-17, 50-random-18, 50-random-19 |
Case Name |
Status |
Exec Time |
Memory |
00-sample |
AC |
1 ms |
256 KB |
01-minimum |
AC |
1 ms |
256 KB |
02-maximum |
AC |
3 ms |
384 KB |
50-random-00 |
AC |
2 ms |
384 KB |
50-random-01 |
AC |
2 ms |
256 KB |
50-random-02 |
AC |
2 ms |
384 KB |
50-random-03 |
AC |
2 ms |
256 KB |
50-random-04 |
AC |
2 ms |
384 KB |
50-random-05 |
AC |
1 ms |
256 KB |
50-random-06 |
AC |
2 ms |
256 KB |
50-random-07 |
AC |
2 ms |
256 KB |
50-random-08 |
AC |
2 ms |
256 KB |
50-random-09 |
AC |
2 ms |
256 KB |
50-random-10 |
AC |
1 ms |
256 KB |
50-random-11 |
AC |
2 ms |
384 KB |
50-random-12 |
AC |
2 ms |
256 KB |
50-random-13 |
AC |
1 ms |
256 KB |
50-random-14 |
AC |
1 ms |
256 KB |
50-random-15 |
AC |
1 ms |
256 KB |
50-random-16 |
AC |
1 ms |
256 KB |
50-random-17 |
AC |
1 ms |
256 KB |
50-random-18 |
AC |
2 ms |
256 KB |
50-random-19 |
AC |
3 ms |
384 KB |