Submission #537349

#	Time	Username	Problem	Language	Result	Execution time	Memory
537349		pavement	Popeala (CEOI16_popeala)	C++17	0 / 100	538 ms	1056 KiB

popeala

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
#define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
using db = double;
using ll = long long;
using ld = long double;
using ii = pair<int, int>;
using iii = tuple<int, int, int>;
using iiii = tuple<int, int, int, int>;
template<class key, class value = null_type, class cmp = less<key> >
using ordered_set = tree<key, value, cmp, rb_tree_tag, tree_order_statistics_node_update>;

int N, T, S, P[20005], lim[55], dp[20005], ndp[20005];
bool R[55][20005];
char C;
vector<ii> vec;
map<int, int> mpp;

int qry(int l, int r, int x, int idx) {
	assert(l <= r);
	int ret = LLONG_MAX;
	for (int i = l; i <= r; i++)
		ret = min(ret, dp[i - 1] + x * P[idx] - x * P[i - 1]);
	return ret;
}

void go() {
	for (int i = 1; i <= T; i++) {
		mpp.clear();
		vec.clear();
		for (int k = 1; k <= N; k++) {
			if (R[k][i]) lim[k] = (lim[k] ? lim[k] : i);
			else lim[k] = 0;
			if (lim[k]) mpp[lim[k]]++;
		}
		for (auto k : mpp) vec.eb(k.first, k.second);
		if (vec.empty()) {
			ndp[i] = qry(1, i, 0, i);
			continue;
		}
		reverse(vec.begin(), vec.end());
		int cum = 0;
		ndp[i] = LLONG_MAX;
		for (int k = 0, prv = i; k < vec.size(); k++) {
			cum += vec[k].second;
			//cout << "! " << vec[k].first << ' ' << prv << ' ' << cum << '\n';
			ndp[i] = min(ndp[i], qry(vec[k].first, prv, cum, i));
			prv = vec[k].first - 1;
		}
		if (vec.back().first != 1) {
			//cout << 1 << ' ' << vec.back().first - 1 << " 0\n";
			ndp[i] = min(ndp[i], qry(1, vec.back().first - 1, 0, i));
		}
	}
}

main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N >> T >> S;
	for (int i = 1; i <= T; i++) cin >> P[i], P[i] += P[i - 1];
	for (int i = 1; i <= N; i++)
		for (int j = 1; j <= T; j++) {
			cin >> C;
			R[i][j] = (C == '1');
		}
	dp[0] = 0;
	for (int i = 1; i <= T; i++) dp[i] = 1e16;
	for (int i = 1; i <= S; i++) {
		for (int j = 1; j <= N; j++) lim[j] = 0;
		go();
		swap(dp, ndp);
		dp[0] = 1e16;
		cout << dp[T] << '\n';
	}
}

Compilation message (stderr)

popeala.cpp: In function 'void go()':
popeala.cpp:60:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |   for (int k = 0, prv = i; k < vec.size(); k++) {
      |                            ~~^~~~~~~~~~~~
popeala.cpp: At global scope:
popeala.cpp:73:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   73 | main() {
      | ^~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 9
• Subtask 4: 0 / 74