/*
$$$$$$$\ $$\ $$$$$$$\
$$ __$$\ \__| $$ __$$\
$$ | $$ | $$$$$$\ $$$$$$\ $$\ $$$$$$$\ $$ | $$ | $$$$$$\ $$$$$$\ $$$$$$$\ $$$$$$\
$$$$$$$\ |$$ __$$\ $$ __$$\ $$ |$$ _____|$$$$$$$\ | \____$$\ $$ __$$\ $$ _____|\____$$\
$$ __$$\ $$ / $$ |$$ | \__|$$ |\$$$$$$\ $$ __$$\ $$$$$$$ |$$ | \__|$$ / $$$$$$$ |
$$ | $$ |$$ | $$ |$$ | $$ | \____$$\ $$ | $$ |$$ __$$ |$$ | $$ | $$ __$$ |
$$$$$$$ |\$$$$$$ |$$ | $$ |$$$$$$$ |$$$$$$$ |\$$$$$$$ |$$ | \$$$$$$$\\$$$$$$$ |
\_______/ \______/ \__| \__|\_______/ \_______/ \_______|\__| \_______|\_______|
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/detail/standard_policies.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define PB push_back
#define MP make_pair
#define INS insert
#define LB lower_bound
#define UB upper_bound
#define pii pair <int,int>
#define pll pair <long long, long long>
#define X first
#define Y second
#define _ << " " <<
#define sz(x) (int)x.size()
#define all(a) (a).begin(),(a).end()
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define FORD(i, a, b) for (int i = (a); i > (b); --i)
#define FORA(i, x) for (auto &i : x)
#define REP(i, n) FOR(i, 0, n)
#define BITS(x) __builtin_popcount(x)
#define SQ(a) (a) * (a)
#define TRACE(x) cout << #x " = " << (x) << '\n';
#define YES cout << "YES\n"
#define NO cout << "NO\n"
#define umap unordered_map
typedef long long ll;
typedef long double ld;
typedef vector <int> vi;
typedef vector <pii> vpi;
typedef vector <ll> vll;
typedef vector <pll> vpl;
typedef vector <double> vd;
typedef vector <ld> vld;
typedef vector<string> vs;
typedef tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>ordered_set;
//find_by_order -> kti najmanji
//order_of_key -> koliko ima manjih od x
//((float) t)/CLOCKS_PER_SEC
const int MOD = 1e9 + 7;
const double PI = acos(-1);
const int INF = 1e9 + 10;
const ll INFL = 1e18 + 10;
const int ABC = 30;
const int dx[] = {-1, 1, 0, 0};
const int dy[] = {0, 0, -1, 1};
const int dox[] = {-1, 1, 0, 0, -1, -1, 1, 1};
const int doy[] = {0, 0, -1, 1, -1, 1, -1, 1};
inline int sum(int a, int b){
if (a + b < 0)
return (a + b + MOD) % MOD;
return (a + b) % MOD;
}
inline void add(int &a, int b){
a = sum(a, b);
}
inline int mul(ll a, ll b){
return ((a % MOD) * ((ll)b % MOD)) % MOD;
}
inline int sub(int a, int b){
return (a - b + MOD) % MOD;
}
inline int fast_pot(ll pot, ll n){
ll ret = 1;
while (n){
if (n & 1LL)
ret = (ret * pot) % MOD;
pot = (pot * pot) % MOD;
n >>= 1LL;
}
return ret;
}
inline int divide(int a, int b){
return mul(a, fast_pot(b, MOD - 2));
}
ll lcm(ll a, ll b){
return abs(a * b) / __gcd(a, b);
}
inline double ccw(pii A, pii B, pii C){
return (A.X * B.Y) - (A.Y * B.X) + (B.X * C.Y) - (B.Y * C.X) + (C.X * A.Y) - (C.Y * A.X);
}
inline int CCW(pii A, pii B, pii C){
double val = ccw(A, B, C);
double eps = max(max(abs(A.X), abs(A.Y)), max(max(abs(B.X), abs(B.Y)), max(abs(C.X), abs(C.Y)))) / 1e9;
if (val <= -eps)
return -1;
if (val >= eps)
return 1;
return 0;
}
void to_upper(string &x){
REP(i, sz(x))
x[i] = toupper(x[i]);
}
void to_lower(string &x){
REP(i, sz(x))
x[i] = tolower(x[i]);
}
string its(ll x){
if (x == 0)
return "0";
string ret = "";
while (x > 0){
ret += (x % 10) + '0';
x /= 10;
}
reverse(all(ret));
return ret;
}
ll sti(string s){
ll ret = 0;
REP(i, sz(s)){
ret *= 10;
ret += (s[i] - '0');
}
return ret;
}
const int N = 1e5 + 10;
int n, m, q, p[N], sz[N], sol[N];
stack <pii> s;
vpi edg[N], Q;
int find(int node){
if (p[node] == node)
return node;
return find(p[node]);
}
void merge(int x, int y){
x = find(x);
y = find(y);
if (x == y)
return;
if (sz[x] < sz[y])
swap(x, y);
s.push({y, p[y]});
sz[x] += sz[y];
p[y] = x;
}
void rollback(int x){
while (sz(s) > x){
int x = s.top().X;
int y = s.top().Y;
s.pop();
sz[p[x]] -= sz[x];
p[x] = y;
}
}
void solve(int lo, int hi, vi &v){
if (sz(v) == 0)
return;
if (lo == hi - 1){
FORA(x, v)
sol[x] = min(sol[x], lo);
return;
}
int prije = sz(s);
int mid = (lo + hi) / 2;
for (int i = lo; i < mid; ++i){
int x = m - i + 1;
for (int j = 2 * x; j <= n; j += x)
merge(x, j);
}
vi l, r;
FORA(x, v){
if (find(Q[x].X) == find(Q[x].Y))
l.PB(x);
else
r.PB(x);
}
v.clear();
v.shrink_to_fit();
solve(mid, hi, r);
rollback(prije);
solve(lo, mid, l);
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
srand(time(NULL));
cin >> n >> m >> q;
// FOR(i, 1, m + 1){
// for (int j = 2 * i; j <= n; j += i){
// //cout << m - i _ i _ j << '\n';
// edg[m - i + 1].PB({i, j});
// }
// }
REP(i, n + 1){
p[i] = i;
sz[i] = 1;
}
vi v;
REP(i, q){
int a, b; cin >> a >> b;
Q.PB({a, b});
v.PB(i);
sol[i] = INF;
}
solve(1, m + 1, v);
REP(i, q)
cout << sol[i] << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
2924 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
11 ms |
3308 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
36 ms |
4836 KB |
Output is correct |
| 2 |
Correct |
30 ms |
4708 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
52 ms |
6116 KB |
Output is correct |
| 2 |
Correct |
43 ms |
5732 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
48 ms |
4404 KB |
Output is correct |
| 2 |
Correct |
44 ms |
4364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
68 ms |
4408 KB |
Output is correct |
| 2 |
Correct |
44 ms |
4620 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
85 ms |
5604 KB |
Output is correct |
| 2 |
Correct |
65 ms |
4840 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
46 ms |
5732 KB |
Output is correct |
| 2 |
Correct |
112 ms |
6248 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
129 ms |
6700 KB |
Output is correct |
| 2 |
Correct |
127 ms |
6628 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
163 ms |
7172 KB |
Output is correct |
| 2 |
Correct |
148 ms |
7164 KB |
Output is correct |
