제출 #959885

#제출 시각아이디문제언어결과실행 시간메모리
959885mannshah1211수열 (APIO14_sequence)C++17
50 / 100
2061 ms24924 KiB
/** * author: hashman * created: **/ #include <bits/stdc++.h> using namespace std; string to_string(string s) { return '"' + s + '"'; } string to_string(const char* s) { return to_string((string) s); } string to_string(bool b) { return (b ? "true" : "false"); } template <typename A, typename B> string to_string(pair<A, B> p) { return "(" + to_string(p.first) + ", " + to_string(p.second) + ")"; } template <typename A> string to_string(A v) { bool first = true; string res = "{"; for (const auto &x : v) { if (!first) { res += ", "; } first = false; res += to_string(x); } res += "}"; return res; } void debug_out() { cerr << endl; } template <typename Head, typename... Tail> void debug_out(Head H, Tail... T) { cerr << " " << to_string(H); debug_out(T...); } #define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__); const int64_t inf = 1e17; int main() { ios::sync_with_stdio(false); cin.tie(0); int n, k; cin >> n >> k; vector<int> a(n + 1); for (int i = 1; i <= n; i++) { cin >> a[i]; } vector<int> p(n + 1); for (int i = 1; i <= n; i++) { p[i] = p[i - 1] + a[i]; } auto cost = [&](int l, int r) { return ((int64_t) (p[r] - p[l - 1]) * (p[r] - p[l - 1])); }; k++; vector<vector<int64_t>> dp(n + 1, vector<int64_t>(k + 1, inf)); dp[0][0] = 0; vector<vector<int>> pr(n + 1, vector<int>(k + 1)); for (int j = 1; j <= k; j++) { for (int i = 1; i <= n; i++) { for (int prev = i; prev >= 1; prev--) { dp[i][j] = min(dp[i][j], dp[prev - 1][j - 1] + cost(prev, i)); if (dp[i][j] == dp[prev - 1][j - 1] + cost(prev, i)) { pr[i][j] = prev - 1; } } } } cout << ((int64_t) p[n] * p[n] - dp[n][k]) / 2 << '\n'; int cur = n; vector<int> splits; while (cur != 0) { cur = pr[cur][k]; k--; if (cur != 0) { splits.push_back(cur); } } reverse(splits.begin(), splits.end()); for (int split : splits) { cout << split << " "; } cout << '\n'; }
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