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Submission #949852

# Submission time Handle Problem Language Result Execution time Memory
949852 2024-03-19T18:55:55 Z KiaRez Swapping Cities (APIO20_swap) C++17
0 / 100
 234 ms 106504 KB 
/*
    IN THE NAME OF GOD
*/
#include <bits/stdc++.h>

// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")

using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;

#define F                                      first
#define S                                      second
#define Mp                                     make_pair
#define pb                                     push_back
#define pf                                     push_front
#define size(x)                                ((ll)x.size())
#define all(x)                                 (x).begin(),(x).end()
#define kill(x)		                           cout << x << '\n', exit(0);
#define fuck(x)                                cout << "(" << #x << " , " << x << ")" << endl
#define endl                                   '\n'

const int N = 5e5+23, lg = 20;
ll Mod = 1e9+7; //998244353;

inline ll MOD(ll a, ll mod=Mod) {a%=mod; (a<0)&&(a+=mod); return a;}
inline ll poww(ll a, ll b, ll mod=Mod) {
    ll ans = 1;
    a=MOD(a, mod);
    while (b) {
        if (b & 1) ans = MOD(ans*a, mod);
        b >>= 1;
        a = MOD(a*a, mod);
    }
    return ans;
}

int n, m, h[N], ok[N], cnt, cnd[N], f[N], par[lg][N], mx[lg][N];
vector<pii> e;
vector<int> tree[N];

int getPar(int v) {return (f[v]==0 ? v : f[v]=getPar(f[v]));}

void merge(int v, int u, int w) {
	v=getPar(v), u=getPar(u);
	if(v == u) {
		ok[v] = 1, mx[0][cnd[v]] = min(mx[0][cnd[v]], w);
		return;
	}

	tree[cnt].pb(cnd[v]); tree[cnt].pb(cnd[u]);
	ok[v] |= ok[u];
	if(ok[v] == 1) mx[0][cnt] = w;
	cnd[v] = cnt;
	cnt++;
	f[u] = v;
}

void dfs_init(int v, int p=0) {
	h[v] = h[p] + 1, par[0][v] = (p==0 ? v : p);
	for(int i=1; i<lg; i++) {
		par[i][v] = par[i-1][par[i-1][v]];
		if(par[i][v] == 0) par[i][v] = cnd[1];
		mx[i][v] = min(mx[i-1][v], mx[i-1][par[i-1][v]]);
	}
	for(auto u : tree[v]) {
		if(u == p) continue;
		dfs_init(u, v);
	}
}

int getF(int v, int dist) {
	for(int i=0; i<lg; i++) if((dist>>i)%2 == 1) {
		v = par[i][v];
	}
	return v;
}

int LCA(int v, int u) {
	if(h[v] > h[u]) swap(v, u);
	u = getF(u, h[u]-h[v]);
	if(v == u) return v;
	for(int i=lg-1; i>=0; i--) {
		if(par[i][v] != par[i][u]) v=par[i][v], u=par[i][u];
	}
	return par[0][v];
}

void init(int _n, int _m, vector<int> V, vector<int> U, vector<int> W) {
	n=_n, m=_m, cnt=_n+1;
	for(int i=0; i<m; i++) {
		V[i]++, U[i]++;
		e.pb({W[i], i});
	}
	for(int i=0; i<lg; i++) fill(mx[i], mx[i]+2*n+2, (int)2e9);
	for(int i=0; i<N; i++) cnd[i] = i;
	sort(all(e));
	for(auto it : e) {
		merge(V[it.S], U[it.S], it.F);
	}
	dfs_init(cnd[1]);
}

int getMinimumFuelCapacity(int v, int u) {
	v++, u++;
	int lca = LCA(v, u);
	if(mx[lg-1][lca] == 2e9) return -1;
	return mx[lg-1][lca];
}
/*
int main() {
	init(5, 6, {0, 0, 1, 1, 1, 2}, {1, 2, 2, 3, 4, 3}, {4, 4, 1, 2, 10, 3});
	cout<<getMinimumFuelCapacity(1, 2)<<endl;
	cout<<getMinimumFuelCapacity(2, 4)<<endl;
	cout<<getMinimumFuelCapacity(0, 1)<<endl;
	init(3, 2, {0, 0}, {1, 2}, {5, 5});
	cout<<getMinimumFuelCapacity(1, 2)<<endl;
	return 0;
}
*/

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 92764 KB Output is correct
2 Correct 12 ms 92760 KB Output is correct
3 Correct 12 ms 92760 KB Output is correct
4 Correct 12 ms 92820 KB Output is correct
5 Correct 12 ms 93020 KB Output is correct
6 Correct 12 ms 92992 KB Output is correct
7 Correct 12 ms 93016 KB Output is correct
8 Correct 12 ms 93020 KB Output is correct
9 Correct 45 ms 98248 KB Output is correct
10 Correct 56 ms 99272 KB Output is correct
11 Correct 51 ms 99788 KB Output is correct
12 Correct 63 ms 99668 KB Output is correct
13 Correct 66 ms 100236 KB Output is correct
14 Correct 51 ms 98192 KB Output is correct
15 Correct 111 ms 101200 KB Output is correct
16 Correct 117 ms 100904 KB Output is correct
17 Correct 113 ms 101676 KB Output is correct
18 Correct 140 ms 102944 KB Output is correct
19 Incorrect 60 ms 96256 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 92764 KB Output is correct
2 Correct 12 ms 92760 KB Output is correct
3 Incorrect 234 ms 106504 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 92764 KB Output is correct
2 Correct 12 ms 92760 KB Output is correct
3 Correct 12 ms 92760 KB Output is correct
4 Correct 12 ms 92820 KB Output is correct
5 Correct 12 ms 93020 KB Output is correct
6 Correct 12 ms 92992 KB Output is correct
7 Correct 12 ms 93016 KB Output is correct
8 Correct 12 ms 93020 KB Output is correct
9 Correct 12 ms 92764 KB Output is correct
10 Incorrect 12 ms 93020 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 92764 KB Output is correct
2 Correct 13 ms 92764 KB Output is correct
3 Correct 12 ms 92760 KB Output is correct
4 Correct 12 ms 92760 KB Output is correct
5 Correct 12 ms 92820 KB Output is correct
6 Correct 12 ms 93020 KB Output is correct
7 Correct 12 ms 92992 KB Output is correct
8 Correct 12 ms 93016 KB Output is correct
9 Correct 12 ms 93020 KB Output is correct
10 Correct 45 ms 98248 KB Output is correct
11 Correct 56 ms 99272 KB Output is correct
12 Correct 51 ms 99788 KB Output is correct
13 Correct 63 ms 99668 KB Output is correct
14 Correct 66 ms 100236 KB Output is correct
15 Incorrect 12 ms 93020 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 92764 KB Output is correct
2 Correct 12 ms 92760 KB Output is correct
3 Correct 12 ms 92760 KB Output is correct
4 Correct 12 ms 92820 KB Output is correct
5 Correct 12 ms 93020 KB Output is correct
6 Correct 12 ms 92992 KB Output is correct
7 Correct 12 ms 93016 KB Output is correct
8 Correct 12 ms 93020 KB Output is correct
9 Correct 45 ms 98248 KB Output is correct
10 Correct 56 ms 99272 KB Output is correct
11 Correct 51 ms 99788 KB Output is correct
12 Correct 63 ms 99668 KB Output is correct
13 Correct 66 ms 100236 KB Output is correct
14 Correct 51 ms 98192 KB Output is correct
15 Correct 111 ms 101200 KB Output is correct
16 Correct 117 ms 100904 KB Output is correct
17 Correct 113 ms 101676 KB Output is correct
18 Correct 140 ms 102944 KB Output is correct
19 Incorrect 234 ms 106504 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 92764 KB Output is correct
2 Correct 13 ms 92764 KB Output is correct
3 Correct 12 ms 92760 KB Output is correct
4 Correct 12 ms 92760 KB Output is correct
5 Correct 12 ms 92820 KB Output is correct
6 Correct 12 ms 93020 KB Output is correct
7 Correct 12 ms 92992 KB Output is correct
8 Correct 12 ms 93016 KB Output is correct
9 Correct 12 ms 93020 KB Output is correct
10 Correct 45 ms 98248 KB Output is correct
11 Correct 56 ms 99272 KB Output is correct
12 Correct 51 ms 99788 KB Output is correct
13 Correct 63 ms 99668 KB Output is correct
14 Correct 66 ms 100236 KB Output is correct
15 Correct 51 ms 98192 KB Output is correct
16 Correct 111 ms 101200 KB Output is correct
17 Correct 117 ms 100904 KB Output is correct
18 Correct 113 ms 101676 KB Output is correct
19 Correct 140 ms 102944 KB Output is correct
20 Incorrect 234 ms 106504 KB Output isn't correct
21 Halted 0 ms 0 KB -