Submission #780769

#TimeUsernameProblemLanguageResultExecution timeMemory
780769KryzKnapsack (NOI18_knapsack)C++17
73 / 100
1075 ms2668 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long #define fi first #define se second #define sst string #define pb push_back #define maxco 100000+5 #define lld long double #define cha ios_base::sync_with_stdio(false);cin.tie(NULL); #define ffl cout.flush(); #define phi acos(-1) #define mod 707 #define mr make_pair #define pqin priority_queue<ll,vector<ll>,greater<>> #define pqpair priority_queue<pair<ll,ll> ,vector<pair<ll,ll>>,greater<pair<ll,ll>>> #define pqpair2 priority_queue<pair<pair<ll,ll>,pair<ll,ll>>,vector<pair<pi,pair<ll,ll>>>,greater<pair<pi,pair<ll,ll>>>> #define INF 1000000009 #define MAXN 1000069 #define pi pair<ll,ll> ll mvx[]={1,-1,0,0}; ll mvy[]={0,0,1,-1}; float x,y; clock_t time_req; void st(){ time_req = clock(); } void end(){ time_req = clock() - time_req; cout << "Using pow function, it took " << (float)time_req/CLOCKS_PER_SEC << " seconds" << endl; } ll a[MAXN],b[MAXN],c[MAXN]; ll dp[MAXN]; int main(){ cha ll n,x; cin>>x>>n; for(ll i=1;i<=n;i++){ cin>>a[i]>>b[i]>>c[i]; } for(ll i=x;i>=0;i--)dp[i]=-1e18; dp[0]=0; for(ll i=1;i<=n;i++){ for(ll j=x-b[i];j>=0;j--){ if(dp[j]!=-1e18){ ll cnt=1; while(cnt<=c[i] && j+cnt*b[i]<=x){ dp[j+cnt*b[i]]=max(dp[j]+a[i]*cnt,dp[j+cnt*b[i]]); cnt++; } } } } ll ans=0; for(ll i=x;i>=1;i--)ans=max(dp[i],ans); cout<<ans; } //ll n,m,k,a[MAXN]; //map<ll,ll> cnt; //ll val[MAXN][69]; //ll dp[MAXN][69]; //ll bck[MAXN][69]; //int main(){ // cin>>n>>m>>k; // for(ll i=1;i<=n;i++){ // cin>>a[i]; // } // for(ll i=0;i<=k;i++){ // cnt.clear(); // ll idx=1; // ll t=0; // for(ll j=1;j<=n;j++){ // cnt[a[j]]++; // if(cnt[a[j]]>m)t++; // while(t>i){ // if(cnt[a[idx]]>m)t--; // cnt[a[idx]]--; // idx++; // } // val[j][i]=idx-1; // } // } //// for(ll j=0;j<=k;j++){ //// for(ll i=1;i<=n;i++){ //// cout<<j<<" "<<i<<" : "<<val[j][i]<<endl; //// } //// } // for(ll j=1;j<=n;j++){ // for(ll i=0;i<=k;i++){ // if(j<=i){ // dp[j][i]=0; // continue; // } // else{ // if(dp[val[j][i]][i-bck[j-1][i]]+1==dp[j-1][i]){ // //gabung // dp[j][i]=dp[j-1][i]; // bck[j][i]=bck[j-1][i]; // } // else if(dp[j-1][i-1]<dp[j-1][i]+1 && i>0){ // //dia bikin grup // dp[j][i]=dp[j-1][i-1]; // bck[j][i]=bck[j-1][i-1]+1; // } // else{ // dp[j][i]=dp[j-1][i]+1; // bck[j][i]=0; // } // } // } // } //// for(ll i=0;i<=k;i++){ //// for(ll j=1;j<=n;j++){ //// cout<<i<<" "<<j<<" : "<<dp[j][i]<<endl; //// } //// } // cout<<dp[n][k]<<endl; //}
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