제출 #1024516

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1024516		giorgi_pkhaladze	Knapsack (NOI18_knapsack)	C++17	49 / 100	6 ms	9048 KiB

knapsack

#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define ff first
#define ss second
#define gcd __gcd
using namespace std;
int n,m,s,k,i,j,ans,dp[200005],a[200005],b[200005],c[200005],cnt[200005];
vector<pii> v[200005],nivtebi;
signed main() {
    cin>>s>>n;
    for(i=1; i<=n; i++){
        cin>>a[i]>>b[i]>>c[i];
        cnt[b[i]]+=c[i];
        v[b[i]].pb({a[i],c[i]});
    }
    nivtebi.pb({0, 0});
    for(k=1; k<=s; k++){
        sort(v[k].rbegin(),v[k].rend());
        int raod=min(s/k,cnt[k]);
        for(i=0; i<v[k].size(); i++){
            if(v[k][i].ss<=raod) {
                for (int j=1; j<=v[k][i].ss; j++) {
                    nivtebi.pb({k, v[k][i].ff});
                }
                raod-=v[k][i].ss;
            } else {
                for (int j=1; j<=raod; j++) {
                    nivtebi.pb({k, v[k][i].ff});
                }
                raod=0;
                break;
            }
        }
    }
    for(k=1; k<nivtebi.size(); k++){
        for(i=s; i>=0; i--){
            if (i>=nivtebi[k].ff)
            dp[i]=max(dp[i-nivtebi[k].ff]+nivtebi[k].ss,dp[i]);
            ans=max(ans, dp[i]);
        }
    } 
    cout<<ans;
}  

컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp: In function 'int main()':
knapsack.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(i=0; i<v[k].size(); i++){
      |                  ~^~~~~~~~~~~~
knapsack.cpp:38:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for(k=1; k<nivtebi.size(); k++){
      |              ~^~~~~~~~~~~~~~~

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