Submission #1248446

#TimeUsernameProblemLanguageResultExecution timeMemory
1248446hainam2k9Džumbus (COCI19_dzumbus)C++20
110 / 110
324 ms17172 KiB
#include <bits/stdc++.h> #define tt cin.tie(0), cout.tie(0), ios_base::sync_with_stdio(0) #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout) #define ll long long #define ull unsigned long long #define i128 __int128 #define db long double #define sz(a) ((int)(a).size()) #define pb emplace_back #define pf emplace_front #define pob pop_back #define pof pop_front #define lb lower_bound #define ub upper_bound #define fi first #define se second #define ins emplace #define mp make_pair using namespace std; const int MOD = 1e9+7, MAXN = 1e5+5; const string NAME = ""; int n,m,q,a[1005],sz[1005]; ll dp[1005][1005][2],dp2[1005]; bool vis[1005]; vector<int> adj[1005],v; void dfs(int u, int par){ sz[u]=vis[u]=1, dp[u][1][1]=a[u]; for(int& v : adj[u]){ if(v==par) continue; dfs(v,u), sz[u]+=sz[v]; for(int i = sz[u]; i>0; --i) for(int j = 1; j<=min(i,sz[v]); ++j){ if(j>1) dp[u][i][0]=min(dp[u][i][0],dp[u][i-j][0]+min(dp[v][j][0],dp[v][j][1])); if(i>j) dp[u][i][1]=min(dp[u][i][1],dp[u][i-j-1][0]+a[u]+min(dp[v][j][1],dp[v][j-1][0]+a[v])); if(i-j>1) dp[u][i][1]=min(dp[u][i][1],dp[u][i-j][1]+dp[v][j][0]); dp[u][i][1]=min(dp[u][i][1],dp[u][i-j][1]+min(dp[v][j][1],dp[v][j-1][0]+a[v])); } } } int bs(int bound){ int l=2,r=n,rs=0; while(l<=r){ int mid=(l+r)>>1; if(dp2[mid]<=bound) rs=mid, l=mid+1; else r=mid-1; } return rs; } int main() { tt; if(fopen((NAME + ".INP").c_str(), "r")) fo; cin >> n >> m; for(int i = 1; i<=n; ++i) cin >> a[i]; for(int i = 1; i<=m; ++i){ int x,y; cin >> x >> y; adj[x].pb(y), adj[y].pb(x); } memset(dp,0x3f,sizeof(dp)); for(int i = 1; i<=n; ++i) dp[i][0][0]=0; for(int i = 1; i<=n; ++i) if(!vis[i]) dfs(i,0), v.pb(i); memset(dp2,0x3f,sizeof(dp2)); dp2[0]=0; for(int& u : v) for(int i = n; i>1; --i) for(int j = 2; j<=min(i,sz[u]); ++j) dp2[i]=min(dp2[i],dp2[i-j]+min(dp[u][j][0],dp[u][j][1])); cin >> q; while(q--){ int sum; cin >> sum; cout << bs(sum) << "\n"; } }

Compilation message (stderr)

dzumbus.cpp: In function 'int main()':
dzumbus.cpp:3:19: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dzumbus.cpp:52:45: note: in expansion of macro 'fo'
   52 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
dzumbus.cpp:3:63: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    3 | #define fo freopen((NAME+".INP").c_str(), "r", stdin), freopen((NAME+".OUT").c_str(), "w", stdout)
      |                                                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dzumbus.cpp:52:45: note: in expansion of macro 'fo'
   52 |     if(fopen((NAME + ".INP").c_str(), "r")) fo;
      |                                             ^~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...