Submission #792381

#	Time	Username	Problem	Language	Result	Execution time	Memory
792381		bLIC	Džumbus (COCI19_dzumbus)	C++17	50 / 110	45 ms	17480 KiB

dzumbus

/**
 *  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
#define eb emplace_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 ONLINE_JUDGE
#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> bool chmin(T& a, T b){return (a>b?a=b,1:0);}
template<class T> bool chmax(T& a, T b){return (a<b?a=b,1:0);}
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 N = 1001;

vi adj[N];
vvl dp[N];
ll val[N];
bool vis[N];

/*
dp[n][0] = node n is neither relaxed nor exchanging.
dp[n][1] = node n is relaxed but not exchanging.
dp[n][2] = node n is relaxed and exchanging.
*/

vvl merge(const vvl& a, const vvl& b){
    vvl res(4, vl(sz(a[0])+sz(b[0])-1, INFLL));
    for (int i = 0;i<sz(a[0]);i++){
        for (int j =0;j<sz(b[0]);j++){
            chmin(res[0][i+j], a[0][i] + min({b[0][j], b[2][j]}));

            chmin(res[1][i+j], a[1][i] + b[0][j]);

            chmin(res[3][i+j], a[3][i] + b[0][j]);
            if (j) chmin(res[3][i+j], a[3][i] + b[1][j-1]);
            chmin(res[3][i+j], a[3][i] + b[2][j]);

            chmin(res[2][i+j], a[2][i] + b[0][j]);
            if (j) chmin(res[2][i+j], a[3][i] + b[1][j-1]);
            chmin(res[2][i+j], a[3][i] + b[2][j]);

            assert(min({res[0][i+j], res[1][i+j], res[2][i+j]})>=0);
        }
    }
    return res;
}

vl diff_merge(const vl& a, const vl& b){
    vl res(sz(a) + sz(b) - 1, INFLL);
    for (int i = 0;i<sz(a);i++) for (int j = 0;j<sz(b);j++) {
        chmin(res[i+j], a[i] + b[j]);
        assert(res[i+j]>=0);
    }
    return res;
}

void dfs(int node, int p){
    vis[node] = true;
    vvl res(4, vl(1));
    res[2][0] = INFLL;
    for (int x:adj[node]) if (x!=p){
        dfs(x, node);
        res = merge(res, dp[x]);
        // debug(node, x, res);
    }
    for (int i = 0;i<sz(res[1]);i++) if (res[1][i]!=INFLL) res[1][i] += val[node];
    res[0].push_back(INFLL);
    res[1].push_back(INFLL);
    for (ll& x:res[2]) if (x!=INFLL) x += val[node];
    res[2].insert(res[2].begin(), 0);
    res[2][1] = INFLL;
    // debug(node, res);
    dp[node] = res;
}

void solve(){
    int n, m;cin>>n>>m;
    for (int i = 1;i<=n;i++) cin>>val[i];
    for (int i = 0;i<m;i++){
        int a, b;cin>>a>>b;
        adj[a].pb(b);
        adj[b].pb(a);
    }
    vl res(1);
    for (int j = 1;j<=n;j++){
        if (vis[j]) continue;
        dfs(j, 0);
        // debug(j);

        for (int i = sz(dp[j][0])-1;i>=0;i--) chmin(dp[j][0][i], min(dp[j][1][i], dp[j][2][i]));
        for (int i = sz(dp[j][0])-2;i>=0;i--) chmin(dp[j][0][i], dp[j][0][i+1]);
        res = diff_merge(res, dp[j][0]);
    }   
    for (int i = sz(res) - 2;i>=0;i--){
        chmin(res[i], res[i+1]);
    }
    debug(res);
    int q;cin>>q;
    while(q--){
        ll av;cin>>av;
        auto ind = upper_bound(all(res), av) - res.begin() - 1;
        cout<<ind<<'\n';
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);


#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    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 ONLINE_JUDGE
    cerr << "TIME = " << (float)(clock() - tt)/CLOCKS_PER_SEC << endl;
    tt = clock();
#endif
}

Compilation message (stderr)

dzumbus.cpp: In function 'int main()':
dzumbus.cpp:205:14: warning: unused variable 'i' [-Wunused-variable]
  205 |     int t=1, i = 1;
      |              ^

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30