洛谷 P1802 5 倍经验日题解

 01背包问题，无论失败还是胜利都加经验，失败不消耗武器数量

#include
using namespace std;
using ll = long long;
const int N = 1e6 + 9;
ll dp[N], win[N], lose[N], use[N];
 
void solve()
{
	ll n, x; cin >> n >> x;
	for (ll i = 1; i <= n; ++i)cin >> lose[i] >> win[i] >> use[i];
 
	for (ll i = 1; i <= n; ++i)
	{
		for (ll j = x; j >= 0; --j)
		{
			if (j >= use[i]) dp[j] = max(dp[j] + lose[i], dp[j - use[i]] + win[i]);
			else dp[j] = dp[j] + lose[i];
		}
	}
 
	cout << dp[x]*5ll;
}
int main()
{
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	solve();
	return 0;
}