제출 #576300

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
576300		Cookie	Knapsack (NOI18_knapsack)	C++14	0 / 100	7 ms	12244 KiB

knapsack

#define LIFESUCKS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ld long double
#define ar array
#define fu(i,a,b,c) for(ll i=a;i<=b;i+=c)
#define fd(i,a,b,c) for(ll i=a;i>=b;i-=c)
#define vt vector
#define pb push_back
#define all(c) (c).begin(), (c).end()
//#define length(x) (int)(x).size()
#define fi first;
#define se second;
#define vt vector
const int mxn = 5e4;
struct o{
    ll v, k;
};
bool cmp(o a, o b){
    return(a.v > b.v);
}

int s, n;
vt<o>a[2001];
int main(){
    LIFESUCKS;
    cin >> s >> n;
    for(int i = 0; i < n; i++){
        ll w, v, k; cin >> v >> w >> k;
        a[w].pb({v, k});
    }
    ll dp[s + 1][s + 1];
    for(int i = 0; i <= s; i++)dp[0][i] = 0;
    
    for(int i = 1; i <= s; i++)sort(a[i].begin(), a[i].end(), cmp);
    for(int i = 1; i <= s; i++){
        int cr = s / i;
        for(int j= 1; j <= s; j++)dp[i][j] = dp[i - 1][j];
        ll val = 0, cnt = 0;
        for(int j = 0; j < a[i].size(); j++){
            a[i][j].k = min(cr - cnt, a[i][j].k); 
            val += a[i][j].k * a[i][j].v; cnt += a[i][j].k;
            for(int k = cnt * i; k <= s; k++){
                dp[i][k] = max(dp[i][k], dp[i - 1][k - cnt * i] + val);
            }
            if(cnt == cr)break;
        }
        
    }
    ll ans = 0;
    for(int i = 1; i <= s; i++)ans = max(ans, dp[n - 1][i]);
    cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp: In function 'int main()':
knapsack.cpp:42:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<o>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         for(int j = 0; j < a[i].size(); j++){
      |                        ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27