Submission #626564

#	Time	Username	Problem	Language	Result	Execution time	Memory
626564		Kaitokid	Catfish Farm (IOI22_fish)	C++17	35 / 100	1098 ms	213072 KiB

fish

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int mx;
ll dp[3009][3009][2];
ll sum[3009][3009];
ll go(int x,int lst,int u)
{
    if(x==mx)return 0;
    if(dp[x][lst][u]!=-1)return dp[x][lst][u];
    for(int i=0;i<=mx;i++)
    {
        ll d=0;
        if(u==0 && i>lst) d=sum[x-1][i]-sum[x-1][lst];
        dp[x][lst][u]=max(dp[x][lst][u],d+go(x+1,i,0));
        if(i<lst)d+=sum[x][lst]-sum[x][i];
        dp[x][lst][u]=max(dp[x][lst][u],d+go(x+1,i,1));
    }
    return dp[x][lst][u];
}
ll max_weights(int N,int M,vector<int>X,vector<int>Y,vector<int>W)
{
    mx=N;
    for(int i=0;i<M;i++)sum[X[i]][Y[i]+1]+=W[i];
    for(int i=0;i<N;i++)
        for(int j=1;j<=N;j++)sum[i][j]+=sum[i][j-1];
    memset(dp,-1,sizeof dp);
    ll ans=0;
    for(int i=0;i<=N;i++)
       ans=max(ans,go(1,i,0));
       return ans;
}

Compilation message (stderr)

fish.cpp: In function 'll max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:29:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   29 |     for(int i=0;i<=N;i++)
      |     ^~~
fish.cpp:31:8: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   31 |        return ans;
      |        ^~~~~~

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 9
• Subtask 4: 14 / 14
• Subtask 5: 21 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16