| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 715279 | 2023-03-26T11:03:54 Z | ssense | Toll (BOI17_toll) | C++14 | 3000 ms | 1204 KB |
#include <bits/stdc++.h>
#define startt ios_base::sync_with_stdio(false);cin.tie(0);
typedef long long ll;
using namespace std;
#define vint vector<int>
#define all(v) v.begin(), v.end()
#define MOD 1000000007
#define MOD2 998244353
#define MX 1000000000
#define MXL 1000000000000000000
#define PI (ld)2*acos(0.0)
#define pb push_back
#define sc second
#define fr first
//#define int long long
#define endl '\n'
#define ld long double
#define NO cout << "NO" << endl
#define YES cout << "YES" << endl
int ceildiv(int one, int two) {if (one % two == 0) {return one / two;}else {return one / two + 1;}} int power(int n, int pow, int m) {if (pow == 0) return 1;if (pow % 2 == 0) {ll x = power(n, pow / 2, m);return (x * x) % m;}else return (power(n, pow - 1, m) * n) % m;} int gcd(int a, int b) { if (!b)return a; return gcd(b, a % b);} int factorial(int n, int mod) {if (n > 1)return (n * factorial(n - 1, mod)) % mod; else return 1;} int lcm(int a, int b) {return (a * b) / gcd(a, b);} vector<int> read(int n) {vector<int> a; for (int i = 0; i < n; i++) { int x; cin >> x; a.pb(x);} return a;}struct prefix_sum{vint pref;void build(vint a){pref.pb(0);for(int i = 0; i < a.size(); i++){pref.pb(pref.back()+a[i]);}}int get(int l, int r){return pref[r]-pref[l-1];}};//mesanu
const int N = 500;
vector<pair<int, int>> bruh[20][N+5];
void solve()
{
int n, m, o, k;
cin >> k >> n >> m >> o;
for(int i = 0; i < m; i++)
{
int u, v, t;
cin >> u >> v >> t;
bruh[0][u].push_back({v, t});
}
for(int i = 1; i <= 20; i++)
{
for(int j = 0; j < n; j++)
{
if(j/k+(1<<i)-1 > (n-1)/k){break;}
vector<pair<int, int>> now;
for(auto p : bruh[i-1][j])
{
for(auto p2: bruh[i-1][p.fr])
{
now.push_back({p2.fr, p.sc+p2.sc});
}
}
sort(all(now));
for(int br = 0; br < now.size(); br++)
{
if(br == 0 || now[br].fr != now[br-1].fr)
{
bruh[i][j].push_back(now[br]);
}
}
}
}
while(o--)
{
int a, b;
cin >> a >> b;
vector<pair<int, int>> now, now2;
now.push_back({a, 0});
while(true)
{
int dist = b/k-a/k;
if(dist <= 0)
{
break;
}
int insp = 31-__builtin_clz(dist);
for(auto p : now)
{
for(auto p2 : bruh[insp][p.fr])
{
now2.push_back({p2.fr, p2.sc+p.sc});
}
}
if(now2.empty()){break;}
sort(all(now2));
now.clear();
for(int i = 0; i < now2.size(); i++)
{
if(i == 0 || now2[i].fr != now2[i-1].fr)
{
now.push_back(now2[i]);
}
}
a = now.front().fr;
}
if(now.empty()){
cout << -1 << endl;
continue;
}
bool flag = false;
for(auto x : now)
{
if(x.fr == b)
{
cout << x.sc << endl;
flag = true;
break;
}
}
if(!flag)
{
cout << -1 << endl;
}
}
}
int32_t main(){
startt
int t = 1;
//cin >> t;
while (t--) {
solve();
}
}
/*
5 14 5 5
0 5 9
5 12 10
0 7 7
7 12 8
4 7 10
0 12
0 5
0 7
7 12
0 13
*/
Compilation message
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Runtime error | 1 ms | 852 KB | Execution killed with signal 11 |
| 2 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Runtime error | 1 ms | 852 KB | Execution killed with signal 11 |
| 2 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1 ms | 468 KB | Output is correct |
| 2 | Execution timed out | 3051 ms | 1204 KB | Time limit exceeded |
| 3 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1 ms | 468 KB | Output is correct |
| 2 | Execution timed out | 3051 ms | 1204 KB | Time limit exceeded |
| 3 | Halted | 0 ms | 0 KB | - |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Runtime error | 1 ms | 852 KB | Execution killed with signal 11 |
| 2 | Halted | 0 ms | 0 KB | - |