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답안 #688512

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
688512 2023-01-27T15:50:18 Z Urvuk3 메기 농장 (IOI22_fish) C++17
0 / 100
 52 ms 8104 KB 
#include "fish.h"

#include <bits/stdc++.h>

using namespace std;

#define ll long long
const int INF=1e9;
const ll LINF=1e18;
#define fi first
#define se second
#define pii pair<int,int>
#define mid ((l+r)/2)
#define sz(a) (int((a).size()))
#define all(a) a.begin(),a.end()
#define endl "\n"
#define PRINT(x) cerr<<#x<<'='<<x<<endl;
#define pb push_back
#define PRINTvec(niz) { cerr<<#niz<<"="; for(auto _i:niz) cerr<<_i<<" "; cerr<<endl; }

long long max_weights(int N,int M,vector<int> X,vector<int> Y,vector<int> W){
    assert(N<=3000);
    vector<vector<ll>> we(N,vector<ll>(N,0));
    for(int i=0;i<M;i++){
        we[X[i]][Y[i]]=W[i];
    }
    vector<vector<vector<ll>>> dp(N,vector<vector<ll>>(N+1,vector<ll>(3,0)));
    for(int i=1;i<N;i++){
        ll pref_max=0;
        for(int tsz=N-1;tsz>=0;tsz--){
            pref_max=max(pref_max+we[i][tsz],max({dp[i-1][tsz+1][0],dp[i-1][tsz+1][1],dp[i-1][tsz+1][2]})+we[i][tsz]);
            dp[i][tsz][0]=pref_max;
        }
        for(int tsz=N;tsz>=0;tsz--){
            dp[i][tsz][2]=max({dp[i-1][tsz][0],dp[i-1][tsz][1],dp[i-1][tsz][2]});
        }

        vector<ll> pref(N,0); pref[0]=we[i-1][0];
        for(int j=1;j<N;j++){
            pref[j]=pref[j-1]+we[i-1][j];
        }
        if(i>1){
            pref_max=0;
            for(int tsz=1;tsz<=N;tsz++){
                pref_max=max(pref_max,max({dp[i-2][tsz][0],dp[i-2][tsz][1],dp[i-2][tsz][2]}));
                dp[i][tsz][1]=pref_max+pref[tsz-1];
            }
            pref_max=0;
            for(int tsz=N;tsz>=1;tsz--){
                pref_max=max(pref_max,max({dp[i-2][tsz][0],dp[i-2][tsz][1],dp[i-2][tsz][2]})+pref[tsz-1]);
                dp[i][tsz][1]=max(dp[i][tsz][1],pref_max);
            }
        }
        else{
            for(int tsz=1;tsz<=N;tsz++){
                dp[i][tsz][1]=pref[tsz-1];
            }
        }
        pref_max=0;
        for(int tsz=2;tsz<=N;tsz++){
            pref_max=max(pref_max+we[i-1][tsz-1],dp[i-1][tsz-1][1]+we[i-1][tsz-1]);
            dp[i][tsz][1]=max(dp[i][tsz][1],pref_max);
        }
    }
    /*
    for(int i=0;i<N;i++){
        PRINT(i);
        for(int p=0;p<3;p++){
            for(int tsz=0;tsz<=N;tsz++){
                cerr<<"dp["<<i<<"]["<<tsz<<"]["<<p<<"]="<<dp[i][tsz][p]<<endl;
            }
            cerr<<endl;
        }
        cerr<<"XXXXXXXXXXXXXXXXXXXXX"<<endl<<endl;
    }
    */
    ll res=0;
    for(int tsz=0;tsz<=N;tsz++){
        res=max({res,dp[N-1][tsz][0],dp[N-1][tsz][1],dp[N-1][tsz][2]});
    }
    return res;
}

/*
7 8
1 3 10
2 2 1
3 0 1
3 1 10
4 2 10
5 3 10
5 4 10
6 6 1000
*/

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 22 ms 4308 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Runtime error 52 ms 8104 KB Execution killed with signal 6
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 284 KB Output is correct
9 Incorrect 3 ms 1748 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '199904465818'
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 284 KB Output is correct
9 Incorrect 3 ms 1748 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '199904465818'
10 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 284 KB Output is correct
9 Incorrect 3 ms 1748 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '199904465818'
10 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 340 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 22 ms 4308 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -