119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
#include <bits/stdc++.h>
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using namespace std;
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#define V vector
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#define rmin(a, b) a = min(a, b)
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#define rmax(a, b) a = max(a, b)
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#define rep(i, lim) for (size_t i = 0; i < (lim); i++)
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#define nrep(i, s, lim) for (size_t i = s; i < (lim); i++)
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#define repv(i, v) for (auto &i : (v))
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#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
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#define sortv(v) sort(v.begin(), v.end())
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#define all(v) (v).begin(), (v).end()
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using vi = vector<int>;
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using vvi = vector<vi>;
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using vvvi = vector<vvi>;
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using vvvvi = vector<vvvi>;
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using ll = long long;
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using vl = vector<ll>;
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using vvl = vector<vl>;
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using vvvl = vector<vvl>;
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using vvvvl = vector<vvvl>;
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template<class v>
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auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
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os << vec[0];
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for (size_t i = 1; i < vec.size(); i++) {
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os << ' ' << vec[i];
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}
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os << '\n';
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<v> &vec)->istream& {
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for (auto &i : vec) {
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is >> i;
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}
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return is;
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}
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template<class v>
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auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
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for (auto &i : vec) {
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os << i[0];
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for (size_t j = 1; j < i.size(); j++) {
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os << ' ' << i[j];
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}
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os << '\n';
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}
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return os;
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}
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template<class v>
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auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
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for (auto &i : vec) {
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for (auto &j : i) {
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is >> j;
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}
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}
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return is;
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}
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int main()
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{
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ios::sync_with_stdio(false);
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cin.tie(nullptr);
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int n, m;
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cin >> n >> m;
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vvl plates(n);
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vl maxi(n, 0);
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vvl prefix(n);
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rep(i, n) {
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int n;
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cin >> n;
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plates[i].resize(n);
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prefix[i].resize(n + 1);
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prefix[i][0] = 0;
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for (size_t j = 0; j < n; j++) {
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cin >> plates[i][j];
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prefix[i][j + 1] = prefix[i][j] + plates[i][j];
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maxi[i] += plates[i][j];
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}
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}
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vvl dp(n, vl(101, 0));
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for (size_t i = 0; i < n; i++) {
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dp[i][plates[i].size()] = maxi[i];
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for (size_t j = 0; j < plates[i].size(); j++) {
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for (size_t k = j; k < plates[i]. size(); k++) {
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rmax(dp[i][plates[i].size() - (k - j + 1)], maxi[i] - prefix[i][k + 1] + prefix[i][j]);
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}
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}
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for (size_t j = plates[i].size() + 1; j <= 100; j++) {
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dp[i][j] = dp[i][j - 1];
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}
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}
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// cout << dp;
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vvl ans(n + 1, vl(m + 1, 0));
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for (size_t i = 1; i <= n; i++) {
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for (size_t j = 1; j <= m; j++) {
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for (size_t k = 0; k <= j && k <= 100; k++) {
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rmax(ans[i][j], ans[i - 1][j - k] + dp[i - 1][k]);
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}
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}
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}
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cout << ans[n][m] << '\n';
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}
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