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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define S second
#define F first
#define all(x) (x).begin(),(x).end()
#define sz size()
#define Yes cout << "YES" << endl
#define No cout << "NO" << endl
#define pb(x) push_back(x);
#define endl '\n'
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int N=3e5+7;
ll INF=INT_MAX,mod=1e9+7;
int TT=1;
ll power(ll x, unsigned int y)
{
ll res = 1;
x = x; // % mod;
if (x == 0) return 0;
while (y > 0)
{
if (y & 1) res = (res*x) ; // % mod;
y = y>>1;
x = (x*x) ; // % mod;
}
return res;
}
ll dp[N];
vector<pair<ll,ll> > b[N];
void solve()
{
memset(dp,-1,sizeof dp);
ll n , s; cin >> n >> s; swap(n,s);
for(int i = 1; i <= n; i++)
{
ll price , w , k ;cin >> price >> w >> k;
b[w].push_back({price,k});
}
for(int i = 1; i <= s; i++) if(b[i].sz)sort(all(b[i]),greater<pair<ll,ll> > ());
dp[0] = 0;
for(int i = 1; i<= s; i++)
{
if(b[i].sz==0) continue;
for(int j = s; j>= 0; j--)
{
ll c = 1;
ll cursum = 0;
ll alllst = 0;
ll l= 0;
while(j-i*c>=0&&l<b[i].sz)
{
cursum+=b[i][l].F;
if(dp[j-i*c] !=-1)
dp[j] = max(dp[j],dp[j-i*c]+cursum);
if(alllst+b[i][l].S==c) alllst+=b[i][l].S,l++;
c++;
}
}
}
ll mx = 0;
for(int i = 1; i<=s; i++) mx = max(mx,dp[i]);
cout << mx << endl;
}
int main(){
//freopen("friday.in","r",stdin);
//freopen("friday.out","w",stdout);
fast;
while(TT--)
solve();
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
knapsack.cpp: In function 'void solve()':
knapsack.cpp:53:30: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | while(j-i*c>=0&&l<b[i].sz)
| ^
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