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Submission #480238

# Submission time Handle Problem Language Result Execution time Memory
480238 2021-10-15T10:39:25 Z keertan Knapsack (NOI18_knapsack) C++14
100 / 100
 51 ms 2064 KB 
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimization ("unroll-loops")
/**
 * If you live in imaginary world when your imaginary situation encounter in 
 * real situation you can't enjoiy it because you have to do pending work.
 * {This pending work appeared because you wasted that time for your useless
 * imagianry thinking.}
 */
#include<bits/stdc++.h>
using namespace std;
//#define int  int64_t
#define all(x) x.begin(),x.end()
#define all1(x) x.rbegin(),x.rend()
#define sz(x) (int)x.size()
const int N=5e5+5;
int dp[2][2001];
 vector<pair<int,int>> ok[20001];
void solve(){
    int s,n;
    cin>>s>>n;
    for (int i=0,x,y,z;i<n;i++){
        cin>>y>>x>>z;
        ok[x].push_back({y,z});
       // cin>>ok[i][1]>>ok[i][0]>>ok[i][2];
    }
    int u(0);
    int cur=1,prv=0;
    for (int i=1;i<=s;i++){
        sort(all(ok[i]));
        int req=s/i;
        int best=1;
        bool cur1=true;
        for (int j1=1,f=sz(ok[i])-1;j1<=req && f!=-1;j1++){
            u=ok[i][f].first;
            if (!cur1){break;}
            cur1=true;
            for (int j=best;j<=s;j++){
                dp[cur][j]=dp[prv][j];
                if (j>=i && dp[cur][j]<dp[prv][j-i]+u){
                    dp[cur][j]=dp[prv][j-i]+u;
                    if (!cur1){best=j;}
                }
            }
            ok[i][f].second--;
            if (ok[i][f].second==0){f--;}
            swap(cur,prv);
        }
    }
    int ans=0;
    for (int i=1;i<=s;i++){ans=max(ans,dp[prv][i]);}
    cout<<ans;
}
int32_t main(){
    ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
    //freopen("feast.in","r",stdin);
	//freopen("feast.out","w",stdout);
    int tq=1;
    //cin>>tq;
    for (;tq;tq--){solve();}
}
//is a bruteforce possible?
//think greedier, make more assumptions
// if we you find solution using loop to decrease complexity use bs
//stuck for more than 5 minutes? move on

Compilation message

knapsack.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 1 ms 716 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 716 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 1 ms 716 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 716 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 1 ms 716 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 716 KB Output is correct
10 Correct 1 ms 716 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 1 ms 716 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 716 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 1 ms 716 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 716 KB Output is correct
10 Correct 1 ms 716 KB Output is correct
11 Correct 1 ms 716 KB Output is correct
12 Correct 2 ms 716 KB Output is correct
13 Correct 1 ms 716 KB Output is correct
14 Correct 1 ms 716 KB Output is correct
15 Correct 1 ms 716 KB Output is correct
16 Correct 1 ms 716 KB Output is correct
17 Correct 1 ms 716 KB Output is correct
18 Correct 1 ms 716 KB Output is correct
19 Correct 1 ms 716 KB Output is correct
20 Correct 1 ms 716 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 1 ms 716 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 716 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 1 ms 716 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 716 KB Output is correct
10 Correct 1 ms 716 KB Output is correct
11 Correct 1 ms 716 KB Output is correct
12 Correct 1 ms 716 KB Output is correct
13 Correct 1 ms 716 KB Output is correct
14 Correct 1 ms 716 KB Output is correct
15 Correct 1 ms 716 KB Output is correct
16 Correct 2 ms 716 KB Output is correct
17 Correct 1 ms 716 KB Output is correct
18 Correct 1 ms 716 KB Output is correct
19 Correct 1 ms 716 KB Output is correct
20 Correct 1 ms 716 KB Output is correct
21 Correct 1 ms 716 KB Output is correct
22 Correct 1 ms 716 KB Output is correct
23 Correct 1 ms 716 KB Output is correct
24 Correct 1 ms 716 KB Output is correct
25 Correct 1 ms 716 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 1 ms 716 KB Output is correct
28 Correct 1 ms 716 KB Output is correct
29 Correct 1 ms 716 KB Output is correct
30 Correct 1 ms 716 KB Output is correct
31 Correct 1 ms 796 KB Output is correct
32 Correct 1 ms 716 KB Output is correct
33 Correct 1 ms 716 KB Output is correct
34 Correct 1 ms 716 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 716 KB Output is correct
2 Correct 1 ms 716 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 716 KB Output is correct
5 Correct 1 ms 716 KB Output is correct
6 Correct 1 ms 716 KB Output is correct
7 Correct 1 ms 716 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 716 KB Output is correct
10 Correct 1 ms 716 KB Output is correct
11 Correct 1 ms 716 KB Output is correct
12 Correct 1 ms 716 KB Output is correct
13 Correct 1 ms 716 KB Output is correct
14 Correct 1 ms 716 KB Output is correct
15 Correct 1 ms 716 KB Output is correct
16 Correct 2 ms 716 KB Output is correct
17 Correct 1 ms 716 KB Output is correct
18 Correct 1 ms 716 KB Output is correct
19 Correct 1 ms 716 KB Output is correct
20 Correct 1 ms 716 KB Output is correct
21 Correct 1 ms 716 KB Output is correct
22 Correct 1 ms 716 KB Output is correct
23 Correct 1 ms 716 KB Output is correct
24 Correct 1 ms 716 KB Output is correct
25 Correct 1 ms 716 KB Output is correct
26 Correct 2 ms 716 KB Output is correct
27 Correct 1 ms 716 KB Output is correct
28 Correct 1 ms 716 KB Output is correct
29 Correct 1 ms 716 KB Output is correct
30 Correct 1 ms 716 KB Output is correct
31 Correct 1 ms 796 KB Output is correct
32 Correct 1 ms 716 KB Output is correct
33 Correct 1 ms 716 KB Output is correct
34 Correct 1 ms 716 KB Output is correct
35 Correct 38 ms 1868 KB Output is correct
36 Correct 40 ms 1928 KB Output is correct
37 Correct 41 ms 1868 KB Output is correct
38 Correct 38 ms 1824 KB Output is correct
39 Correct 41 ms 1716 KB Output is correct
40 Correct 51 ms 1868 KB Output is correct
41 Correct 38 ms 1956 KB Output is correct
42 Correct 42 ms 1868 KB Output is correct
43 Correct 50 ms 1940 KB Output is correct
44 Correct 41 ms 1980 KB Output is correct
45 Correct 38 ms 2064 KB Output is correct
46 Correct 40 ms 1868 KB Output is correct
47 Correct 42 ms 1956 KB Output is correct
48 Correct 42 ms 1836 KB Output is correct
49 Correct 35 ms 1996 KB Output is correct
50 Correct 43 ms 1772 KB Output is correct