oj.uz

답안 #829370

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
829370 2023-08-18T09:56:16 Z tolbi 메기 농장 (IOI22_fish) C++17
58 / 100
 1000 ms 73136 KB 
#include <bits/stdc++.h>
using namespace std;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
typedef long long ll;
#include "fish.h"
vector<vector<ll>> dp;
vector<int> X,Y;
int N,M;
vector<vector<ll>> pref;
vector<vector<int>> ind;
vector<vector<int>> pos;
ll query(int x, int l, int r){
    if (pos[x].back()<l) return 0ll;
    if (pos[x][0]>r) return 0ll;
    if (l>r) return 0ll;
    auto itl = lower_bound(pos[x].begin(), pos[x].end(), l);
    auto itr = lower_bound(pos[x].begin(), pos[x].end(), r+1);
    itr--;
    ll hueh = 0;
    if (itl!=pos[x].begin()){
        itl--;
        hueh = pref[x][(itl-pos[x].begin())];
    }
    return pref[x][(itr-pos[x].begin())]-hueh;
}
int getup(int node){
    int xv = X[node];
    int yv = Y[node];
    for (int i = 0; i < pos[xv].size(); i++){
        if (pos[xv][i]>yv){
            return ind[xv][i];
        }
    }
    assert(false);
    return 23;
}
int getdown(int node){
    int xv = X[node];
    int yv = Y[node];
    for (int i = pos[xv].size()-1; i >= 0; i--){
        if (pos[xv][i]<yv){
            return ind[xv][i];
        }
    }
    assert(false);
    return 23;
}
int getnextup(int node){
    int xv = X[node];
    int yv = Y[node];
    for (int i = 0; i < pos[xv+1].size(); i++){
        if (pos[xv+1][i]>=yv){
            return ind[xv+1][i];
        }
    }
    assert(false);
    return 23;
}
int getnextdown(int node){
    int xv = X[node];
    int yv = Y[node];
    for (int i = pos[xv+1].size()-1; i >= 0; i--){
        if (pos[xv+1][i]<=yv){
            return ind[xv+1][i];
        }
    }
    assert(false);
    return 23;
}
long long f(int node, int flag){
    int x = X[node];
    int y = Y[node];
    //cout<<x<<" "<<y<<" "<<flag<<endl;
    if (dp[node][flag]!=-1) return dp[node][flag];
    if (flag==1){
        dp[node][flag]=0;
        if (y<N){
            ll crr = 0;
            int next = getup(node);
            if (x>0) crr = query(x-1,y,Y[next]-1);
            dp[node][flag]=crr+f(getup(node),1);
        }
        if (x+1<N){
            int next = getnextup(node);
            ll crr = query(x,y,Y[next]-1);
            dp[node][flag]=max(dp[node][flag],crr+f(next,1));
            next=getnextdown(node);
            crr = query(x+1,Y[next],y-1);
            dp[node][flag]=max(dp[node][flag],crr+f(next,0));
        }
    }
    else if (flag==0){
        dp[node][flag]=0;
        if (y-1>=0){
            int next = getdown(node);
            dp[node][flag]=query(x,Y[next],y-1)+f(next,0);
        }
        if (x+1<N){
            dp[node][flag]=max(dp[node][flag],f(getnextup(node),0));
            if (y==0){
                dp[node][flag]=max(dp[node][flag],f(M+x+1,2));
            }
        }
    }
    else {
        dp[node][flag]=0;
        if (y<N){
            dp[node][flag]=f(getup(node),2);
        }
        if (x+1<N){
            int next = getnextup(node);
            ll crr = query(x,y,Y[next]-1);
            dp[node][flag]=max(dp[node][flag],crr+f(next,1));
            next=getnextdown(node);
            crr = query(x+1,Y[next],y-1);
            dp[node][flag]=max(dp[node][flag],crr+f(next,0));
        }
    }
    if (flag!=0 && x+2<N){
        dp[node][flag]=max(dp[node][flag],f(M+x+2,1));
    }
    //cout<<x<<" "<<y<<" "<<flag<<" "<<dp[node][flag]<<endl;
    return dp[node][flag];
};

long long max_weights(int _N, int _M, std::vector<int> _X, std::vector<int> _Y, std::vector<int> _W) {
    vector<vector<pair<int,pair<ll,int>>>> arr;
    N=_N;
    vector<int> W;
    arr.resize(N);
    vector<int> bb(N,0);
    for (int i = 0; i < _Y.size(); ++i)
    {
        if (_Y[i]==0) bb[_X[i]]=_W[i];
        else {
            X.push_back(_X[i]);
            Y.push_back(_Y[i]);
            W.push_back(_W[i]);
            M++;
        }
    }
    for (int i = 0; i < N; ++i)
    {
        X.push_back(i);
        Y.push_back(0);
        W.push_back(bb[i]);
    }
    for (int i = 0; i < N; i++){
        X.push_back(i);
        Y.push_back(N);
        W.push_back(0);
    }
    for (int i = 0; i < Y.size(); i++){
        arr[X[i]].push_back({Y[i],{W[i],i}});
    }
    pref.resize(arr.size());
    pos.resize(arr.size());
    ind.resize(arr.size());
    for (int i = 0; i < N; ++i)
    {
        sort(arr[i].begin(), arr[i].end());
        pref[i].resize(arr[i].size());
        pos[i].resize(arr[i].size());
        ind[i].resize(arr[i].size());
        for (int j = 0; j < arr[i].size(); j++){
            pref[i][j]=arr[i][j].second.first;
            if (j) pref[i][j]+=pref[i][j-1];
            pos[i][j]=arr[i][j].first;
            ind[i][j]=arr[i][j].second.second;
        }
    }
    //0 decreasing
    //1 increasing
    //2 increasing, \
    but forbidden to profit from back
    //coutarr(X);
    //coutarr(Y);
    //coutarr(W);
    //cout<<M<<endl;
    dp.resize(Y.size(),vector<ll>(3,-1));
    return f(M,2);
}

Compilation message

fish.cpp:174:5: warning: multi-line comment [-Wcomment]
  174 |     //2 increasing, \
      |     ^
fish.cpp: In function 'int getup(int)':
fish.cpp:29:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i = 0; i < pos[xv].size(); i++){
      |                     ~~^~~~~~~~~~~~~~~~
fish.cpp: In function 'int getnextup(int)':
fish.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for (int i = 0; i < pos[xv+1].size(); i++){
      |                     ~~^~~~~~~~~~~~~~~~~~
fish.cpp: In function 'long long int max_weights(int, int, std::vector<int>, std::vector<int>, std::vector<int>)':
fish.cpp:132:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  132 |     for (int i = 0; i < _Y.size(); ++i)
      |                     ~~^~~~~~~~~~~
fish.cpp:153:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  153 |     for (int i = 0; i < Y.size(); i++){
      |                     ~~^~~~~~~~~~
fish.cpp:165:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<long long int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  165 |         for (int j = 0; j < arr[i].size(); j++){
      |                         ~~^~~~~~~~~~~~~~~

Subtask #1
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1087 ms 50928 KB Time limit exceeded
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 Execution timed out 1073 ms 61232 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 69 ms 48448 KB Output is correct
2 Correct 64 ms 48384 KB Output is correct
3 Correct 70 ms 44912 KB Output is correct
4 Correct 72 ms 49232 KB Output is correct
5 Correct 85 ms 50796 KB Output is correct
6 Correct 82 ms 50896 KB Output is correct
7 Correct 89 ms 50732 KB Output is correct
8 Correct 85 ms 50732 KB Output is correct

Subtask #4
14.0 / 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 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct

Subtask #5
21.0 / 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 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 2 ms 596 KB Output is correct
17 Correct 58 ms 6472 KB Output is correct
18 Correct 59 ms 7116 KB Output is correct
19 Correct 44 ms 6972 KB Output is correct
20 Correct 47 ms 7108 KB Output is correct
21 Correct 44 ms 6980 KB Output is correct
22 Correct 126 ms 13372 KB Output is correct
23 Correct 8 ms 1748 KB Output is correct
24 Correct 30 ms 4488 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 7 ms 1620 KB Output is correct

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 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 2 ms 724 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 0 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 2 ms 596 KB Output is correct
17 Correct 58 ms 6472 KB Output is correct
18 Correct 59 ms 7116 KB Output is correct
19 Correct 44 ms 6972 KB Output is correct
20 Correct 47 ms 7108 KB Output is correct
21 Correct 44 ms 6980 KB Output is correct
22 Correct 126 ms 13372 KB Output is correct
23 Correct 8 ms 1748 KB Output is correct
24 Correct 30 ms 4488 KB Output is correct
25 Correct 1 ms 596 KB Output is correct
26 Correct 7 ms 1620 KB Output is correct
27 Correct 4 ms 2132 KB Output is correct
28 Correct 530 ms 30832 KB Output is correct
29 Execution timed out 1079 ms 43328 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 69 ms 48448 KB Output is correct
2 Correct 64 ms 48384 KB Output is correct
3 Correct 70 ms 44912 KB Output is correct
4 Correct 72 ms 49232 KB Output is correct
5 Correct 85 ms 50796 KB Output is correct
6 Correct 82 ms 50896 KB Output is correct
7 Correct 89 ms 50732 KB Output is correct
8 Correct 85 ms 50732 KB Output is correct
9 Correct 128 ms 62180 KB Output is correct
10 Correct 79 ms 32472 KB Output is correct
11 Correct 149 ms 64552 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 67 ms 48432 KB Output is correct
19 Correct 62 ms 48360 KB Output is correct
20 Correct 68 ms 48416 KB Output is correct
21 Correct 61 ms 48452 KB Output is correct
22 Correct 145 ms 61156 KB Output is correct
23 Correct 197 ms 72724 KB Output is correct
24 Correct 223 ms 73136 KB Output is correct

Subtask #8
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1087 ms 50928 KB Time limit exceeded
2 Halted 0 ms 0 KB -