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mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-11-08 14:18:47 +00:00

P3112 [USACO14DEC]Guard Mark G

https://www.luogu.com.cn/record/85668298
This commit is contained in:
Baoshuo Ren 2022-09-02 08:55:23 +08:00
parent ef580a25a7
commit b07ef359ca
Signed by: baoshuo
GPG Key ID: 00CB9680AB29F51A
29 changed files with 156 additions and 0 deletions

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#include <iostream>
#include <algorithm>
#include <limits>
#include <tuple>
using std::cin;
using std::cout;
const char endl = '\n';
const int N = 25;
int n, h, ans = -1;
std::tuple<int, int, int> a[N];
bool vis[N];
void dfs(int x) {
if (x == n + 1) {
int hh = 0, ss = std::numeric_limits<int>::max();
for (int i = 1; i <= n; i++) {
if (!vis[i]) continue;
hh += std::get<0>(a[i]);
int sum = 0;
for (int j = i + 1; j <= n; j++) {
if (!vis[j]) continue;
sum += std::get<1>(a[j]);
}
ss = std::min(ss, std::get<2>(a[i]) - sum);
}
if (hh >= h) {
ans = std::max(ans, ss);
}
return;
}
dfs(x + 1);
vis[x] = true;
dfs(x + 1);
vis[x] = false;
}
int main() {
std::ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> h;
for (int i = 1; i <= n; i++) {
cin >> std::get<0>(a[i]) >> std::get<1>(a[i]) >> std::get<2>(a[i]);
}
std::sort(a + 1, a + 1 + n, [&](decltype(a[0]) x, decltype(a[0]) y) -> bool {
return std::get<1>(x) + std::get<2>(x) > std::get<1>(y) + std::get<2>(y);
});
dfs(0);
if (ans == -1) {
cout << "Mark is too tall" << endl;
} else {
cout << ans << endl;
}
return 0;
}

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