제출 #1136023

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1136023		lmaobruh	Džumbus (COCI19_dzumbus)	C++20	0 / 110	33 ms	16964 KiB

dzumbus

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ii pair<int,int>
#define all(x) x.begin(),x.end()
#define fo(i, a, b) for (int i=(a);i<=(b);++i)
#define fd(i, a, b) for (int i=(a);i>=(b);--i)
#define umax(a, b) a=max(a, b)
#define umin(a, b) a=min(a, b)
#define ve vector
#define vi ve<int>
#define vl ve<ll>
#define vvi ve<vi>
#define ar array
#define fi first
#define se second
const int N = 1e3+5;

int n, m, a[N], sz[N];
vi g[N];
ll dp[N][N][2];

void dfs(int u, int p) {
    sz[u] = 1;
    dp[u][0][0] = 0;
    dp[u][1][1] = a[u];
    for (int v : g[u]) if (v != p) {
        dfs(v, u);
        fd(j,sz[u],0) {
            fd(i,sz[v],0) {
                if (j > 1) umin(dp[u][i+j][0], dp[v][i][0] + dp[u][j][0]);
                if (i > 1) umin(dp[u][i+j][0], dp[v][i][1] + dp[u][j][0]);
                
                umin(dp[u][i+j][1], dp[v][i][1] + dp[u][j][1]);
                umin(dp[u][i+j][1], dp[v][i][0] + dp[u][j][1]);
                umin(dp[u][i+j+1][1], dp[v][i][1] + dp[u][j][0] + a[u]);
                umin(dp[u][i+j+1][1], dp[v][i][0] + dp[u][j][1] + a[v]);
                umin(dp[u][i+j+2][1], dp[v][i][0] + dp[u][j][0] + a[u] + a[v]);
            }
        }
        sz[u] += sz[v];
    }
}

void sol(int tc) {
    memset(dp, 0x3f, sizeof dp);
    cin >> n >> m;
    fo(i,1,n) cin >> a[i];
    fo(i,1,m) {
        int u, v; cin >> u >> v;
        g[u].pb(v), g[v].pb(u);
    }
    vi st;
    fo(i,1,n) if (!sz[i]) {
        dfs(i, -1);
        st.pb(i);
    }
    int q; cin >> q;
    while (q--) {
        ll X; cin >> X;
        int ans = 0;
        for (int x : st) {
            fo(i,1,sz[x]) {
                if (dp[x][i][0] <= X 
                || dp[x][i][1] <= X)
                ans = i;
            }   
        }
        cout << ans << '\n';
    }
}

signed main() {
    cin.tie(0) -> sync_with_stdio(0);
    if (fopen("A.inp", "r")) freopen("A.inp", "r", stdin);
    int tc = 1; // cin >> tc;
    fo(i,1,tc) sol(i);
}

컴파일 시 표준 에러 (stderr) 메시지

dzumbus.cpp: In function 'int main()':
dzumbus.cpp:76:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     if (fopen("A.inp", "r")) freopen("A.inp", "r", stdin);
      |                              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

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