oj.uz

Submission #888671

# Submission time Handle Problem Language Result Execution time Memory
888671 2023-12-18T05:19:16 Z vjudge1 Two Currencies (JOI23_currencies) C++17
28 / 100
 163 ms 37444 KB 
/*

author : abushbandit
contest : ---

*/

#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;

#define int long long
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define ss second
#define pb push_back
#define rep(i,s,f) for(int i = s;i < f;i++)

#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>

#pragma GCC optimize("Ofast,no-stack-protector,fast-math",3)

template <class type1>
	using ordered_multiset = tree <type1, null_type, less_equal <type1>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<pair<int,int>> vii;
typedef pair<int,int> pii;

const ll INF = 1e18;
const ll MOD7 = 1e9 + 7;
const ll MOD9 = 998244353;
const ld PI = acos(-1.0);
const int N = 1e5 + 6;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
    
}

int binpow (int a, int n) {
	int res = 1;
	while (n) {
		if (n & 1)
			res *= a;
		a *= a;
		n >>= 1;
	}
	return res;
}

void start_file(string file){
	freopen((file + ".in").c_str(),"r",stdin);
	freopen((file + ".out").c_str(),"w",stdout);
}

vector<pair<int,int>> g[N];
int up[N][30];
int dp[N],dep[N];
int path[N];
 
void dfs(int u,int pr,int de){
	dep[u] = de;
	for(auto x : g[u]){
		if(x.ff != pr){
			up[x.ff][0] = u;
			dp[x.ff] = dp[u] + path[x.ss];
			dfs(x.ff,u,de + 1);			
		}
	}
}
 
int lca(int a,int b){
	if(dep[a] < dep[b])
		swap(a,b);
	int dis = dep[a] - dep[b];
	for(int i = 29;i >= 0;i--)
		if(dis & (1 << i)){
			a = up[a][i];
		}
	if(a == b)
		return a;
	for(int i = 29;i >= 0;i--)
		if(up[a][i] != up[b][i]){
			a = up[a][i];
			b = up[b][i];
		}
	return up[a][0];
}

void clear(){
	for(int i = 0;i < N;i++){
		g[i].clear();
		path[i] = dep[i] = dp[i] = 0;
		for(int j = 0;j < 30;j++)
			up[i][j] = 0;
	}
	return;
}

void solve(int tc){
	
	clear();
	int n,m,q;
    cin >> n >> m >> q;
    for(int i = 0;i < n - 1;i++){
    	int a,b;
    	cin >> a >> b;
    	g[a].push_back({b,i});
    	g[b].push_back({a,i});
    }
    
    int cul;
    for(int i = 0;i < m;i++){
    	int u;
    	cin >> u >> cul;
    	path[u - 1]++;
    }
    dp[1] = 0;
    up[1][0] = 1;
    dfs(1,1,0);
    for(int j = 1;j < 30;j++)
    	for(int i = 1;i < n + 1;i++){
    		up[i][j] = up[up[i][j - 1]][j - 1];
    	}
    for(int i = 0;i < q;i++){
    	int a,b,g,s;
    	cin >> a >> b >> g >> s;
    	int lc = lca(a,b);
    	int dis = dp[a] + dp[b] - 2 * (dp[lc]);
    	int cnt = s / cul;
    	dis = max(0ll,dis - cnt);
    	dis = g - dis;
    	if(dis < 0)
    		dis = -1;
    	cout << dis << "\n";
    }
    
}

signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    
    //	start_file("");

	ios_base::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);

	int test_cases = 1;
//	cin >> test_cases ;
	for(int tc = 1;tc <= test_cases;++ tc){
		solve(tc);
	}
    
}

Compilation message

currencies.cpp: In function 'void start_file(std::string)':
currencies.cpp:75:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |  freopen((file + ".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
currencies.cpp:76:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |  freopen((file + ".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 28508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 28508 KB Output is correct
2 Correct 6 ms 28508 KB Output is correct
3 Correct 6 ms 28760 KB Output is correct
4 Correct 6 ms 28624 KB Output is correct
5 Correct 87 ms 33904 KB Output is correct
6 Correct 99 ms 32580 KB Output is correct
7 Correct 93 ms 33104 KB Output is correct
8 Correct 80 ms 33360 KB Output is correct
9 Correct 78 ms 33132 KB Output is correct
10 Correct 117 ms 33880 KB Output is correct
11 Correct 107 ms 33824 KB Output is correct
12 Correct 111 ms 33872 KB Output is correct
13 Correct 109 ms 34012 KB Output is correct
14 Correct 107 ms 33952 KB Output is correct
15 Correct 163 ms 37200 KB Output is correct
16 Correct 141 ms 37444 KB Output is correct
17 Correct 151 ms 37200 KB Output is correct
18 Correct 134 ms 34280 KB Output is correct
19 Correct 130 ms 34212 KB Output is correct
20 Correct 130 ms 34340 KB Output is correct
21 Correct 96 ms 33808 KB Output is correct
22 Correct 99 ms 33472 KB Output is correct
23 Correct 94 ms 33472 KB Output is correct
24 Correct 93 ms 33324 KB Output is correct
25 Correct 101 ms 34008 KB Output is correct
26 Correct 128 ms 34128 KB Output is correct
27 Correct 102 ms 34132 KB Output is correct
28 Correct 88 ms 33876 KB Output is correct
29 Correct 87 ms 33876 KB Output is correct
30 Correct 98 ms 34008 KB Output is correct
31 Correct 91 ms 33872 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 28504 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 28508 KB Output isn't correct
2 Halted 0 ms 0 KB -