Submission #703099

#	Time	Username	Problem	Language	Result	Execution time	Memory
703099		Quan2003	Knapsack (NOI18_knapsack)	C++17	0 / 100	7 ms	10004 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<long long,long long> pii;
const int N = 1e5 + 100;
const int INF = 1e7 + 10; 
const int mod = 1e9 + 7;
long long n,m,k,tot;
int timer = 1;
vector<long long>lf,ri; 
long long a[N + 1]; 
long long V[N + 1],W[N + 1],C[N + 1];
map<long long,long long>dp[N + 1];
int main(){
      scanf("%d%d",&n,&k);
      map<long long,vector<pii>>books; 
      long long high = 0; 
      for(int i = 1; i <= n; i++) scanf("%d",&W[i]);
      for(int i = 1; i <= n; i++) scanf("%d",&V[i]);
      for(int i = 1; i <= n; i++) scanf("%d",&C[i]);   
      for(int i = 1; i <= n; i++){
            high = max(high ,W[i]); 
            books[W[i]].push_back({V[i],C[i]}); 
      }
      dp[0][0] = 0; 
      int pos = 0; 
      for(auto [cur,lst] : books){
           sort(lst.rbegin(),lst.rend());
           for(int i = 0; i <= k; i++){
               dp[cur - 1][i] = dp[cur][i] = dp[pos][i];
               int page = 0; int copy = 1; 
               int ptr = 0; 
               while(ptr < lst.size() and copy * cur <= i){
                    page += lst[ptr].first;
                    if(dp[cur - 1].count(i - copy * cur)){
                        dp[cur][i] = max(dp[cur][i],dp[cur - 1][i - copy * cur] + page);  
                       // if(cur == 3) cout<<dp[cur][i]<<' '<<cur<<' '<<i<<endl; 
                    }
                    copy++;
                    if(copy == lst[ptr].second + 1){
                         copy = 1;
                         ptr++;                          
                    }
               }
           }
           pos = cur; 
      }
      long long ans = dp[high][k]; 
      printf("%d \n",ans); 
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:15:15: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   15 |       scanf("%d%d",&n,&k);
      |              ~^    ~~
      |               |    |
      |               int* long long int*
      |              %lld
knapsack.cpp:15:17: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
   15 |       scanf("%d%d",&n,&k);
      |                ~^     ~~
      |                 |     |
      |                 int*  long long int*
      |                %lld
knapsack.cpp:18:43: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   18 |       for(int i = 1; i <= n; i++) scanf("%d",&W[i]);
      |                                          ~^  ~~~~~
      |                                           |  |
      |                                           |  long long int*
      |                                           int*
      |                                          %lld
knapsack.cpp:19:43: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   19 |       for(int i = 1; i <= n; i++) scanf("%d",&V[i]);
      |                                          ~^  ~~~~~
      |                                           |  |
      |                                           |  long long int*
      |                                           int*
      |                                          %lld
knapsack.cpp:20:43: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   20 |       for(int i = 1; i <= n; i++) scanf("%d",&C[i]);
      |                                          ~^  ~~~~~
      |                                           |  |
      |                                           |  long long int*
      |                                           int*
      |                                          %lld
knapsack.cpp:33:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |                while(ptr < lst.size() and copy * cur <= i){
      |                      ~~~~^~~~~~~~~~~~
knapsack.cpp:49:16: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   49 |       printf("%d \n",ans);
      |               ~^     ~~~
      |                |     |
      |                int   long long int
      |               %lld
knapsack.cpp:15:12: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |       scanf("%d%d",&n,&k);
      |       ~~~~~^~~~~~~~~~~~~~
knapsack.cpp:18:40: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |       for(int i = 1; i <= n; i++) scanf("%d",&W[i]);
      |                                   ~~~~~^~~~~~~~~~~~
knapsack.cpp:19:40: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |       for(int i = 1; i <= n; i++) scanf("%d",&V[i]);
      |                                   ~~~~~^~~~~~~~~~~~
knapsack.cpp:20:40: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |       for(int i = 1; i <= n; i++) scanf("%d",&C[i]);
      |                                   ~~~~~^~~~~~~~~~~~

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