| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 720283 | bLIC | Toll (BOI17_toll) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/**
* Author: Anil Byar
**/
#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
// template<class T>
// using ordered_set = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)(x).size()
#define uniq(v) v.erase(unique(all(v)), v.end())
#define ft first
#define sd second
#define pb push_back
// Source: https://codeforces.com/blog/entry/68809
// { start
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef DEVAL
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif
// } end
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
typedef vector<vl> vvl;
#define dbg if(0)
const ll MOD = 1e9+7;
const ll MOD9 = 998244353;
const ll INFLL = 1e18+5;
const int INF = 1e9;
void printbit(int x, int len) {string s="\n";while(len--){s=((x%2)?'1':'0')+s;x/=2;} cout<<s;}
ll power(ll x, ll y, ll mod){if (y==0) return 1;ll ret = power(x, y/2, mod);ret *= ret;ret%=mod;if (y&1) ret *= x;return ret%mod;}
ll modinv(ll x, ll mod = MOD) {return power(x, mod-2, mod);}
template<class T>
istream& operator>>(istream&in, vector<T>&v){
for (T& x:v) in>>x;
return in;
}
template<class T>
ostream& operator<<(ostream&out, vector<T>&v){
for (T& x:v) out<<x<<' ';
cout<<'\n';
return out;
}
// use ?: with brackets (?:)
// check for overflow
// think about dp
// Read the statement carefully
const int maxN = 1e5+5;;
const int maxK = 8001;
template<class T>
class Div_Con{
vector<vector<T>> table;
vector<T> a;
T id;
int n;
public:
void init(vector<T> _a, T _id){
n = 1;while((1<<n)<(int)_a.size()) n++;
id = _id;a = _a;a.resize(1<<n, id);
table.resize(1<<n, vector<T>(n, id));
build(0, (1<<n), n-1);
}
void build(int l, int r, int lvl){
if (lvl<0) return;
int mid = (l+r)/2;
table[mid-1][lvl] = a[mid-1];
table[mid][lvl] = a[mid];
for (int i = mid-2;i>=l;i--) table[i][lvl] = comb(a[i], table[i+1][lvl]);
for (int i = mid+1;i<r;i++) table[i][lvl] = comb(table[i-1][lvl], a[i]);
build(l, mid, lvl-1);
build(mid, r, lvl-1);
}
T comb(T x, T y) {return x+y;} // replace with any associative operation
T query(int l, int r){
if (l==r) return a[l];
int lvl = 31 - __builtin_clz(l^r);
if (r<l) return Node(5);
assert(r>l);
// debug(table[l][lvl]);
return comb(table[l][lvl], table[r][lvl]);
}
};
struct Node{
vvl cost;
int K;
Node(){}
Node(int k){
cost.assign(k, vl(k, INFLL));
K = k;
for (int i = 0;i<K;i++){
for (int j = 0;j<K;j++) cost[i][j] = INFLL;
}
}
friend Node operator+(Node& a, Node& b){
Node tmp(a.K);
for (int i = 0;i<a.K;i++){
for (int j = 0;j<a.K;j++){
for (int l = 0;l<a.K;l++) tmp.cost[i][j] = min(tmp.cost[i][j], a.cost[i][l]+b.cost[l][j]);
}
}
return tmp;
}
};
void solve(){
int k, n, m, o;
cin>>k>>n>>m>>o;
Div_Con<Node> divc;
vector<Node> nodes(n/k+5, Node(k));
for (int i = 0;i<m;i++){
int a, b, t;cin>>a>>b>>t;
assert(a/k<=n/k+1);
assert(k);
nodes[a/k].cost[a%k][b%k] = t;
}
divc.init(nodes, Node(k));
// for (int i = 0;)
while(o--){
int l, r;
cin>>l>>r;
if (l/k>=r/k){
cout<<-1;
continue;
}
ll ans = divc.query(l/k, r/k-1).cost[l%k][r%k];
if (ans==INFLL) ans = -1;
cout<<ans<<'\n';
}
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
// #ifndef DEVAL
// freopen("input.in", "r", stdin);
// freopen("output.out", "w", stdout);
// freopen("debug.dbg", "w", stderr);
// int tt = clock();
// #endif
int t=1, i = 1;
// cin>>t;
while(t--){
// cout<<"Case #"<<i++<<": ";
solve();
cout<<'\n';
}
// #ifndef DEVAL
// cerr << "TIME = " << (float)(clock() - tt)/CLOCKS_PER_SEC << endl;
// tt = clock();
// #endif
}