Submission #679731

#TimeUsernameProblemLanguageResultExecution timeMemory
679731DP_196Visiting Singapore (NOI20_visitingsingapore)C++14
100 / 100
245 ms588 KiB
#include <bits/stdc++.h> using namespace std; #define sz(x) (int)x.size() #define MASK(i) ((1LL) << (i)) #define all(x) x.begin(), x.end() #define BIT(x, i) ((x) >> (i) & (1LL)) #define dbg(...) cerr << "#" << __LINE__ << ":[" << #__VA_ARGS__ \ << "] = [" ,DBG(__VA_ARGS__) string to_string(const string& s) { return '"' + s + '"'; } void DBG() { cerr << "]" << endl; } template<class H, class... T> void DBG(H h, T... t) { cerr << to_string(h); if(sizeof...(t)) cerr << ", "; DBG(t...); } template <class T> inline bool maximize(T &a, const T &b) { return (a < b ? (a = b) : 0); } template <class T> inline bool minimize(T &a, const T &b) { return (a > b ? (a = b) : 0); } const int MAXN = 1e5 + 6; const int INF = 1e9; const int MOD = 1e9 + 7; int k, n, m, a, b, v[5005], s[5005], t[5005]; int dp[2][5005][2][2]; void subAC() { int res = a + m * b; memset(dp, -0x3f, sizeof (dp)); int inf = dp[0][0][0][0]; for (int i = 0; i <= m; i++) { dp[0][i][0][1] = a + m * b; dp[0][i][0][0] = a + m * b; } dp[0][0][0][0] = 0; for (int i = 1; i <= n; i++) { for (int j = 1; j <= m; j++) { dp[1][j][0][0] = max({dp[0][j][0][0] + b, dp[1][j - 1][0][0] + b, dp[0][j - 1][1][1] + 2 * b}); dp[1][j][0][1] = max(dp[0][j][0][1], dp[0][j][1][1]) + b; dp[1][j][1][0] = max(dp[1][j - 1][1][0], dp[1][j - 1][1][1]) + b; if (s[i] == t[j]) { dp[1][j][1][1] = v[s[i]] + (j > 1 ? a + (j - 1) * b : 0); maximize(dp[1][j][1][1], dp[0][j - 1][0][0] + 2 * a + v[s[i]]); maximize(dp[1][j][1][1], dp[0][j - 1][0][1] + a + v[s[i]]); maximize(dp[1][j][1][1], dp[0][j - 1][1][0] + a + v[s[i]]); maximize(dp[1][j][1][1], dp[0][j - 1][1][1] + v[s[i]]); } maximize(res, dp[1][j][1][1] + (m - j >= 1 ? a + (m - j) * b : 0)); } for (int j = 0; j <= m; j++) { dp[0][j][0][0] = dp[1][j][0][0]; dp[1][j][0][0] = inf; dp[0][j][0][1] = dp[1][j][0][1]; dp[1][j][0][1] = inf; dp[0][j][1][0] = dp[1][j][1][0]; dp[1][j][1][0] = inf; dp[0][j][1][1] = dp[1][j][1][1]; dp[1][j][1][1] = inf; } } cout << res; } void solve() { cin >> k >> n >> m >> a >> b; for (int i = 1; i <= k; i++) cin >> v[i]; for (int i = 1; i <= n; i++) cin >> s[i]; for (int i = 1; i <= m; i++) cin >> t[i]; subAC(); } #define TASK "FUNTOUR" int main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); //freopen(TASK".inp", "r", stdin); //freopen(TASK".out", "w", stdout); int ntest = 1; //cin >> ntest; while (ntest--) solve(); return 0; } //612
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