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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#253596 | #6645. 百合 | hongrock | TL | 0ms | 0kb | C++17 | 1.9kb | 2023-11-17 09:36:27 | 2023-11-17 09:36:27 |
answer
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1 << 17;
const ll inf = (ll)1e18;
int n, k, m, s;
ll dist[N], a[18];
vector<pair<int,int>> V[N];
vector<int> bits[18];
bool done[N];
struct Node{
int id, e;
ll d;
Node(){}
Node(int id, int e, ll d):id(id),e(e),d(d){}
bool operator < (const Node &A)const{
return d > A.d;
}
};
int main(){
scanf("%d %d %d", &k, &m, &s);
n = 1 << k;
for(int i=1; i<=k; ++i) scanf("%lld", a+i);
int x, y, z;
while(m--){
scanf("%d %d %d", &x, &y, &z);
V[x].emplace_back(y, z);
V[y].emplace_back(x, z);
}
for(int i=1; i<n; ++i){
bits[__builtin_popcount(i)].push_back(i);
}
for(;;){
bool flag = 0;
for(int i=1; i<=k; ++i){
for(int j=i; j<=k; ++j){
for(int x=0; x<=min(i, j); ++x){
if(i + j - x <= k){
ll tmp = a[i] + a[j];
if(tmp < a[i+j-x]){
a[i+j-x] = tmp;
flag = 1;
}
}
}
}
}
if(!flag) break;
}
for(int i=0; i<n; ++i) dist[i] = inf;
dist[s] = 0;
priority_queue<Node> Q;
Q.emplace(s, 0, 0);
while(!Q.empty()){
auto nd = Q.top(); Q.pop();
vector<int> cur;
if(nd.e > 0){
for(int v : bits[nd.e]){
int to = nd.id ^ v;
if(nd.d < dist[to]){
dist[to] = nd.d;
cur.push_back(to);
}
}
} else {
if(done[nd.id]) continue;
cur.push_back(nd.id);
}
for(int x : cur){
done[x] = 1;
for(auto [to, z] : V[x]){
if(nd.d + z < dist[to]){
dist[to] = nd.d + z;
Q.emplace(to, 0, dist[to]);
}
}
}
if(!nd.e){
for(int i=1; i<=k; ++i){
Q.emplace(nd.id, i, nd.d + a[i]);
}
}
}
for(int i=0; i<n; ++i){
printf("%lld%c", dist[i], " \n"[i == n - 1]);
}
return 0;
}
Details
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Test #1:
score: 0
Time Limit Exceeded
input:
17 176734 32035 174241040 312806717 869838047 1051792036 618192507 729602782 144984364 904057367 922632751 676477964 651564213 314995751 370303789 14711019 7843270 941966995 532030000 50422 32035 12218 70235 32035 1913 84994 70235 27964 94874 84994 3469 32802 50422 6989 18176 32802 17541 91233 50422...