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Submission #637739

# Submission time Handle Problem Language Result Execution time Memory
637739 2022-09-03T02:30:40 Z pigeonbat Catfish Farm (IOI22_fish) C++17
100 / 100
 593 ms 99732 KB 
#include "fish.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
struct pi{
    int x,y; ll w;
};
struct pi2{
    int y; ll up,down;
};

struct seg{
    ll tree[1<<18];
    int sz=1<<17;
    void up(ll v,int tg){
        tg|=sz;
        for(tree[tg]=max(tree[tg],v);tg>>=1;)
            tree[tg]=max(tree[tg<<1],tree[tg<<1|1]);
    }
    void init(ll v,int tg){
        for(tree[tg|=sz]=v;tg>>=1;)
            tree[tg]=max(tree[tg<<1],tree[tg<<1|1]);
    }
    ll qu(int l,int r){
        ll re=0;
        for(l|=sz,r|=sz;l<=r;l=(l+1)>>1,r=(r-1)>>1){
            if(l&1) re=max(re,tree[l++]);
            if(~r&1) re=max(re,tree[r--]);
        }
        return re;
    }
};

seg t1,t2;
vector<pii> v;
vector<pi> megi;
ll dp[100010],inf=1e18;;
map<int,ll> mp[1000010];

bool comp(pi &a,pi &b){
    if(a.x==b.x) return a.y<b.y;
    return a.x<b.x;
}

ll max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
    for(int i=0;i<N;i++) v.push_back({i,0});
    for(int i=0;i<M;i++){
        if(X[i]>0) v.push_back({X[i]-1,Y[i]+1});
        if(X[i]<N-1) v.push_back({X[i]+1,Y[i]+1});
    }
    for(int i=0;i<M;i++) megi.push_back({X[i],Y[i],W[i]});
    sort(v.begin(),v.end()); v.erase(unique(v.begin(),v.end()),v.end());
    sort(megi.begin(),megi.end(),comp);
    int l1=0,l2=0,m=0;
    for(int i=0;i<(1<<18);i++) t1.tree[i]=t2.tree[i]=-inf;
    for(int i=0;i<N;i++){
        ll cnt=0;
        mp[i][-1]=0;
        while(m<M&&megi[m].x==i){
            cnt+=megi[m].w;
            mp[i][megi[m].y]=cnt;
            //printf("%d %d %lld\n",i,megi[m].y,cnt);
            m++;
        }
    }
    while(l2<(int)v.size()&&v[l2].first==0){
        auto it = mp[1].upper_bound(v[l2].second-1); it--;
        t2.up(it->second,v[l2].second);
        l2++;
    }
    for(int i=1;i<N;i++){
        vector<pi2> tmp;
        while(l2<(int)v.size()&&v[l2].first==i){
            auto it = mp[i-1].upper_bound(v[l2].second-1); it--;
            ll up=t1.qu(0, v[l2].second)+it->second;
            if(i==1) up=max(up,it->second);
            else up=max(up,dp[i-2]+it->second);
            it = mp[i].upper_bound(v[l2].second-1); it--;
            ll down=t2.qu(v[l2].second, N)-it->second;
            tmp.push_back({v[l2].second,up,down});
            dp[i]=max(dp[i],max(up,down));
            //printf("%d %d %lld %lld %lld\n",i,v[l2].second,up,down,it->second);
            l2++;
        }
        if(i==N-1) break;
        while(l1<(int)v.size()&&v[l1].first==i-1){
            t1.init(-inf, v[l1].second);
            t2.init(-inf, v[l1].second);
            l1++;
        }
        for(auto x:tmp){
            auto it = mp[i].upper_bound(x.y-1); it--;
            t1.up(x.up-it->second, x.y);
            it = mp[i+1].upper_bound(x.y-1); it--;
            t2.up(max(x.up,x.down)+it->second, x.y);
        }
    }
    return dp[N-1];
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 71132 KB Output is correct
2 Correct 182 ms 73996 KB Output is correct
3 Correct 77 ms 59156 KB Output is correct
4 Correct 74 ms 59124 KB Output is correct
5 Correct 543 ms 99572 KB Output is correct
6 Correct 515 ms 94404 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 51284 KB Output is correct
2 Correct 279 ms 81096 KB Output is correct
3 Correct 330 ms 86568 KB Output is correct
4 Correct 150 ms 71132 KB Output is correct
5 Correct 176 ms 73920 KB Output is correct
6 Correct 23 ms 51276 KB Output is correct
7 Correct 23 ms 51276 KB Output is correct
8 Correct 24 ms 51284 KB Output is correct
9 Correct 24 ms 51332 KB Output is correct
10 Correct 75 ms 59076 KB Output is correct
11 Correct 72 ms 59088 KB Output is correct
12 Correct 168 ms 71784 KB Output is correct
13 Correct 204 ms 75732 KB Output is correct
14 Correct 171 ms 69424 KB Output is correct
15 Correct 183 ms 71244 KB Output is correct
16 Correct 163 ms 69484 KB Output is correct
17 Correct 178 ms 71196 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 59168 KB Output is correct
2 Correct 68 ms 59140 KB Output is correct
3 Correct 123 ms 64608 KB Output is correct
4 Correct 114 ms 63340 KB Output is correct
5 Correct 173 ms 70912 KB Output is correct
6 Correct 171 ms 70844 KB Output is correct
7 Correct 177 ms 70836 KB Output is correct
8 Correct 175 ms 70940 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 51276 KB Output is correct
2 Correct 22 ms 51304 KB Output is correct
3 Correct 27 ms 51308 KB Output is correct
4 Correct 23 ms 51336 KB Output is correct
5 Correct 24 ms 51284 KB Output is correct
6 Correct 24 ms 51340 KB Output is correct
7 Correct 24 ms 51284 KB Output is correct
8 Correct 25 ms 51232 KB Output is correct
9 Correct 25 ms 51348 KB Output is correct
10 Correct 27 ms 51684 KB Output is correct
11 Correct 25 ms 51476 KB Output is correct
12 Correct 28 ms 51504 KB Output is correct
13 Correct 25 ms 51312 KB Output is correct
14 Correct 25 ms 51512 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 51276 KB Output is correct
2 Correct 22 ms 51304 KB Output is correct
3 Correct 27 ms 51308 KB Output is correct
4 Correct 23 ms 51336 KB Output is correct
5 Correct 24 ms 51284 KB Output is correct
6 Correct 24 ms 51340 KB Output is correct
7 Correct 24 ms 51284 KB Output is correct
8 Correct 25 ms 51232 KB Output is correct
9 Correct 25 ms 51348 KB Output is correct
10 Correct 27 ms 51684 KB Output is correct
11 Correct 25 ms 51476 KB Output is correct
12 Correct 28 ms 51504 KB Output is correct
13 Correct 25 ms 51312 KB Output is correct
14 Correct 25 ms 51512 KB Output is correct
15 Correct 25 ms 51388 KB Output is correct
16 Correct 26 ms 51644 KB Output is correct
17 Correct 83 ms 57432 KB Output is correct
18 Correct 78 ms 57284 KB Output is correct
19 Correct 74 ms 57288 KB Output is correct
20 Correct 75 ms 57284 KB Output is correct
21 Correct 68 ms 57300 KB Output is correct
22 Correct 118 ms 63260 KB Output is correct
23 Correct 37 ms 52380 KB Output is correct
24 Correct 64 ms 55200 KB Output is correct
25 Correct 26 ms 51460 KB Output is correct
26 Correct 35 ms 52396 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 51276 KB Output is correct
2 Correct 22 ms 51304 KB Output is correct
3 Correct 27 ms 51308 KB Output is correct
4 Correct 23 ms 51336 KB Output is correct
5 Correct 24 ms 51284 KB Output is correct
6 Correct 24 ms 51340 KB Output is correct
7 Correct 24 ms 51284 KB Output is correct
8 Correct 25 ms 51232 KB Output is correct
9 Correct 25 ms 51348 KB Output is correct
10 Correct 27 ms 51684 KB Output is correct
11 Correct 25 ms 51476 KB Output is correct
12 Correct 28 ms 51504 KB Output is correct
13 Correct 25 ms 51312 KB Output is correct
14 Correct 25 ms 51512 KB Output is correct
15 Correct 25 ms 51388 KB Output is correct
16 Correct 26 ms 51644 KB Output is correct
17 Correct 83 ms 57432 KB Output is correct
18 Correct 78 ms 57284 KB Output is correct
19 Correct 74 ms 57288 KB Output is correct
20 Correct 75 ms 57284 KB Output is correct
21 Correct 68 ms 57300 KB Output is correct
22 Correct 118 ms 63260 KB Output is correct
23 Correct 37 ms 52380 KB Output is correct
24 Correct 64 ms 55200 KB Output is correct
25 Correct 26 ms 51460 KB Output is correct
26 Correct 35 ms 52396 KB Output is correct
27 Correct 30 ms 51976 KB Output is correct
28 Correct 286 ms 80416 KB Output is correct
29 Correct 438 ms 92528 KB Output is correct
30 Correct 458 ms 92204 KB Output is correct
31 Correct 458 ms 92304 KB Output is correct
32 Correct 347 ms 91532 KB Output is correct
33 Correct 475 ms 92308 KB Output is correct
34 Correct 469 ms 91732 KB Output is correct
35 Correct 178 ms 66776 KB Output is correct
36 Correct 449 ms 90396 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 59168 KB Output is correct
2 Correct 68 ms 59140 KB Output is correct
3 Correct 123 ms 64608 KB Output is correct
4 Correct 114 ms 63340 KB Output is correct
5 Correct 173 ms 70912 KB Output is correct
6 Correct 171 ms 70844 KB Output is correct
7 Correct 177 ms 70836 KB Output is correct
8 Correct 175 ms 70940 KB Output is correct
9 Correct 191 ms 70848 KB Output is correct
10 Correct 151 ms 67000 KB Output is correct
11 Correct 288 ms 82612 KB Output is correct
12 Correct 23 ms 51284 KB Output is correct
13 Correct 25 ms 51288 KB Output is correct
14 Correct 25 ms 51260 KB Output is correct
15 Correct 24 ms 51320 KB Output is correct
16 Correct 24 ms 51276 KB Output is correct
17 Correct 23 ms 51284 KB Output is correct
18 Correct 78 ms 59088 KB Output is correct
19 Correct 74 ms 59168 KB Output is correct
20 Correct 69 ms 59084 KB Output is correct
21 Correct 69 ms 59096 KB Output is correct
22 Correct 217 ms 70964 KB Output is correct
23 Correct 344 ms 83248 KB Output is correct
24 Correct 314 ms 83060 KB Output is correct

Subtask #8
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 71132 KB Output is correct
2 Correct 182 ms 73996 KB Output is correct
3 Correct 77 ms 59156 KB Output is correct
4 Correct 74 ms 59124 KB Output is correct
5 Correct 543 ms 99572 KB Output is correct
6 Correct 515 ms 94404 KB Output is correct
7 Correct 23 ms 51284 KB Output is correct
8 Correct 279 ms 81096 KB Output is correct
9 Correct 330 ms 86568 KB Output is correct
10 Correct 150 ms 71132 KB Output is correct
11 Correct 176 ms 73920 KB Output is correct
12 Correct 23 ms 51276 KB Output is correct
13 Correct 23 ms 51276 KB Output is correct
14 Correct 24 ms 51284 KB Output is correct
15 Correct 24 ms 51332 KB Output is correct
16 Correct 75 ms 59076 KB Output is correct
17 Correct 72 ms 59088 KB Output is correct
18 Correct 168 ms 71784 KB Output is correct
19 Correct 204 ms 75732 KB Output is correct
20 Correct 171 ms 69424 KB Output is correct
21 Correct 183 ms 71244 KB Output is correct
22 Correct 163 ms 69484 KB Output is correct
23 Correct 178 ms 71196 KB Output is correct
24 Correct 74 ms 59168 KB Output is correct
25 Correct 68 ms 59140 KB Output is correct
26 Correct 123 ms 64608 KB Output is correct
27 Correct 114 ms 63340 KB Output is correct
28 Correct 173 ms 70912 KB Output is correct
29 Correct 171 ms 70844 KB Output is correct
30 Correct 177 ms 70836 KB Output is correct
31 Correct 175 ms 70940 KB Output is correct
32 Correct 22 ms 51276 KB Output is correct
33 Correct 22 ms 51304 KB Output is correct
34 Correct 27 ms 51308 KB Output is correct
35 Correct 23 ms 51336 KB Output is correct
36 Correct 24 ms 51284 KB Output is correct
37 Correct 24 ms 51340 KB Output is correct
38 Correct 24 ms 51284 KB Output is correct
39 Correct 25 ms 51232 KB Output is correct
40 Correct 25 ms 51348 KB Output is correct
41 Correct 27 ms 51684 KB Output is correct
42 Correct 25 ms 51476 KB Output is correct
43 Correct 28 ms 51504 KB Output is correct
44 Correct 25 ms 51312 KB Output is correct
45 Correct 25 ms 51512 KB Output is correct
46 Correct 25 ms 51388 KB Output is correct
47 Correct 26 ms 51644 KB Output is correct
48 Correct 83 ms 57432 KB Output is correct
49 Correct 78 ms 57284 KB Output is correct
50 Correct 74 ms 57288 KB Output is correct
51 Correct 75 ms 57284 KB Output is correct
52 Correct 68 ms 57300 KB Output is correct
53 Correct 118 ms 63260 KB Output is correct
54 Correct 37 ms 52380 KB Output is correct
55 Correct 64 ms 55200 KB Output is correct
56 Correct 26 ms 51460 KB Output is correct
57 Correct 35 ms 52396 KB Output is correct
58 Correct 30 ms 51976 KB Output is correct
59 Correct 286 ms 80416 KB Output is correct
60 Correct 438 ms 92528 KB Output is correct
61 Correct 458 ms 92204 KB Output is correct
62 Correct 458 ms 92304 KB Output is correct
63 Correct 347 ms 91532 KB Output is correct
64 Correct 475 ms 92308 KB Output is correct
65 Correct 469 ms 91732 KB Output is correct
66 Correct 178 ms 66776 KB Output is correct
67 Correct 449 ms 90396 KB Output is correct
68 Correct 191 ms 70848 KB Output is correct
69 Correct 151 ms 67000 KB Output is correct
70 Correct 288 ms 82612 KB Output is correct
71 Correct 23 ms 51284 KB Output is correct
72 Correct 25 ms 51288 KB Output is correct
73 Correct 25 ms 51260 KB Output is correct
74 Correct 24 ms 51320 KB Output is correct
75 Correct 24 ms 51276 KB Output is correct
76 Correct 23 ms 51284 KB Output is correct
77 Correct 78 ms 59088 KB Output is correct
78 Correct 74 ms 59168 KB Output is correct
79 Correct 69 ms 59084 KB Output is correct
80 Correct 69 ms 59096 KB Output is correct
81 Correct 217 ms 70964 KB Output is correct
82 Correct 344 ms 83248 KB Output is correct
83 Correct 314 ms 83060 KB Output is correct
84 Correct 580 ms 99716 KB Output is correct
85 Correct 593 ms 99732 KB Output is correct
86 Correct 521 ms 94384 KB Output is correct
87 Correct 541 ms 95104 KB Output is correct
88 Correct 25 ms 51276 KB Output is correct
89 Correct 534 ms 95776 KB Output is correct
90 Correct 465 ms 94620 KB Output is correct
91 Correct 417 ms 94716 KB Output is correct