Submission #446044

#TimeUsernameProblemLanguageResultExecution timeMemory
446044grtDžumbus (COCI19_dzumbus)C++17
20 / 110
63 ms4344 KiB
#include <bits/stdc++.h> #define ST first #define ND second #define PB push_back using namespace std; using ll = long long; using pi = pair<int,int>; using vi = vector<int>; const int nax = 1000 + 10, INF = 1e9 + 10; int n, m; vi V[nax]; bool visited[nax]; vi dp[nax]; vi withme[nax]; int cost[nax]; int DP[2][nax]; void dfs(int x) { visited[x] = true; dp[x].PB(0); withme[x].PB(INF); dp[x].PB(INF); withme[x].PB(INF); for(int nbh : V[x]) if(!visited[nbh]) { dfs(nbh); int me = (int)dp[x].size(), he = (int)dp[nbh].size(); vi dp2(me + he - 1); vi withme2(me + he - 1); for(int i = 0; i < me + he - 1; ++i) { if(i < me) { dp2[i] = dp[x][i]; withme2[i] = withme[x][i]; } else { dp2[i] = INF; withme2[i] = INF; } } for(int cnt1 = 0; cnt1 < me; ++cnt1) { for(int cnt2 = 0; cnt2 < he; ++cnt2) { withme2[cnt1 + cnt2] = min(withme2[cnt1 + cnt2], withme[x][cnt1] + min(withme[nbh][cnt2], dp[nbh][cnt2])); if(cnt2 > 0 && cnt1 > 0) withme2[cnt1 + cnt2] = min(withme2[cnt1 + cnt2], dp[x][cnt1 - 1] + dp[nbh][cnt2 - 1] + cost[nbh] + cost[x]); if(cnt1 > 0) withme2[cnt1 + cnt2] = min(withme2[cnt1 + cnt2], dp[x][cnt1 - 1] + withme[nbh][cnt2] + cost[x]); if(cnt2 > 0) withme2[cnt1 + cnt2] = min(withme2[cnt1 + cnt2], withme[x][cnt1] + dp[nbh][cnt2 - 1] + cost[nbh]); } } for(int cnt1 = 0; cnt1 < me; ++cnt1) { for(int cnt2 = 0; cnt2 < he; ++cnt2) { dp2[cnt1 + cnt2] = min(dp2[cnt1 + cnt2], dp[x][cnt1] + min(withme[nbh][cnt2], dp[nbh][cnt2])); } } withme[nbh].clear(); dp[nbh].clear(); dp[x].swap(dp2); withme[x].swap(withme2); } } int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> n >> m; for(int i = 1; i <= n; ++i) { cin >> cost[i]; } for(int a, b, i = 1; i <= m; ++i) { cin >> a >> b; V[a].PB(b); V[b].PB(a); } for(int i = 1; i <= n; ++i) { DP[0][i] = INF; DP[1][i] = INF; } DP[0][0] = 0; bool turn = 1; int pre = 0; for(int i = 1; i <= n; ++i) { if(!visited[i]) { dfs(i); for(int ii = 0; ii < (int)dp[i].size(); ++ii) { dp[i][ii] = min(dp[i][ii], withme[i][ii]); } for(int ii = (int)dp[i].size() - 2; ii >= 0; --ii) { dp[i][ii] = min(dp[i][ii], dp[i][ii + 1]); } int me = (int)dp[i].size(); for(int cnt1 = 0; cnt1 <= pre; ++cnt1) { for(int cnt2 = 0; cnt2 < me; ++cnt2) { DP[turn][cnt1 + cnt2] = min(DP[turn ^ 1][cnt1 + cnt2], DP[turn ^ 1][cnt1] + dp[i][cnt2]); } } pre += me - 1; turn ^= 1; } } int q; cin >> q; while(q--) { int x; cin >> x; int l = 0, r = n, mid; while(l <= r) { mid = (l + r)/2; if(DP[turn ^ 1][mid] <= x) { l = mid + 1; } else { r = mid - 1; } } cout << l - 1 << "\n"; } }
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