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답안 #744938

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
744938 2023-05-19T08:35:48 Z bgnbvnbv The short shank; Redemption (BOI21_prison) C++14
100 / 100
 1750 ms 120372 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=int;
const ll maxN=2e6+10;
const ll inf=1e8;
struct node
{
    ll pos,val;
    node ()
    {
        val=inf;
        pos=0;
    }
    node operator+(const node&o)
    {
        node ans;
        if(val<=o.val) ans.val=val,ans.pos=pos;
        else  ans=o;
        return ans;
    }
};
ll n,a[maxN];
deque<int>dq;
struct IT1
{
    ll st[4*maxN];
    ll lazy[4*maxN];
    void down(ll id)
    {
        ll &x=lazy[id];
        st[id*2]+=x;
        st[id*2+1]+=x;
        lazy[id*2]+=x;
        lazy[id*2+1]+=x;
        x=0;
    }
    void update(ll i,ll j,ll val,ll id=1,ll l=1,ll r=n)
    {
        if(j<l||r<i) return ;
        if(i<=l&&r<=j)
        {
            st[id]+=val;
            lazy[id]+=val;
            return;
        }
        ll mid=l+r>>1;
        down(id);
        update(i,j,val,id*2+1,mid+1,r);
        update(i,j,val,id*2,l,mid);
        st[id]=min(st[id*2],st[id*2+1]);
    }
    pli get()
    {
        ll x=st[1];
        ll id=1,l=1,r=n;
        while(true)
        {
            if(l==r) return {x,l};
            ll mid=l+r>>1;
            down(id);
            if(st[id*2]>x)
            {
                id=id*2+1;
                l=mid+1;
            }
            else
            {
                id=id*2;
                r=mid;
            }
        }
    }
}t1;
struct IT2
{
    node st[4*maxN];
    void update(ll pos,ll val,ll id=1,ll l=1,ll r=n)
    {
        if(l==r)
        {
            st[id].val=val;
            st[id].pos=l;
            return;
        }
        ll mid=l+r>>1;
        if(pos<=mid) update(pos,val,id*2,l,mid);
        else update(pos,val,id*2+1,mid+1,r);
        st[id]=st[id*2]+st[id*2+1];
    }
    node get(ll i,ll j,ll id=1,ll l=1,ll r=n)
    {
        if(j<l||r<i) return node();
        if(i<=l&&r<=j) return st[id];
        ll mid=l+r>>1;
        return get(i,j,id*2,l,mid)+get(i,j,id*2+1,mid+1,r);
    }
}t2;
ll t;
ll d;
ll ans=0;
void solve()
{
    cin >> n >> d >> t;
//    t1.build();
    for(int i=1;i<=n;i++) cin >>a[i],a[i]-=i;
    ll l;
    for(int i=1;i<=n;i++)
    {
        while(dq.size()>0&&a[i]<=a[dq.back()])
        {
            dq.pop_back();
        }
        dq.pb(i);
        while(dq.size()>0&&i+a[dq.back()]>t) dq.pop_back();
        if(dq.size()==0) l=i;
        else l=dq.back(),ans++;
        t1.update(l+1,i,-1);
        t2.update(i,l+1);
        l++;
    }
    d=min(d,n-1);
    node vd;
    ll cur;
    while(d--)
    {
        cur=ans;
        ans+=t1.get().fi;
        if(cur==ans) break;
        ll pos=t1.get().se;
        while(true)
        {
            vd=t2.get(pos,n);
            ll x=vd.pos;
            l=vd.val;
            if(l>pos) break;
            t1.update(l,x,1);
            l=inf;
            t2.update(x,l);
        }
    }
    cout << ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message

prison.cpp: In member function 'void IT1::update(ll, ll, ll, ll, ll, ll)':
prison.cpp:52:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   52 |         ll mid=l+r>>1;
      |                ~^~
prison.cpp: In member function 'std::pair<int, int> IT1::get()':
prison.cpp:65:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   65 |             ll mid=l+r>>1;
      |                    ~^~
prison.cpp: In member function 'void IT2::update(ll, ll, ll, ll, ll)':
prison.cpp:91:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   91 |         ll mid=l+r>>1;
      |                ~^~
prison.cpp: In member function 'node IT2::get(ll, ll, ll, ll, ll)':
prison.cpp:100:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  100 |         ll mid=l+r>>1;
      |                ~^~

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 62924 KB Output is correct
2 Correct 29 ms 62844 KB Output is correct
3 Correct 29 ms 62924 KB Output is correct
4 Correct 29 ms 62872 KB Output is correct
5 Correct 29 ms 62868 KB Output is correct
6 Correct 29 ms 62852 KB Output is correct
7 Correct 29 ms 62856 KB Output is correct
8 Correct 29 ms 62964 KB Output is correct
9 Correct 33 ms 62892 KB Output is correct
10 Correct 34 ms 62884 KB Output is correct
11 Correct 30 ms 62916 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 28 ms 62932 KB Output is correct
2 Correct 210 ms 73076 KB Output is correct
3 Correct 212 ms 73052 KB Output is correct
4 Correct 211 ms 73536 KB Output is correct
5 Correct 195 ms 73224 KB Output is correct
6 Correct 217 ms 73048 KB Output is correct
7 Correct 482 ms 73176 KB Output is correct
8 Correct 217 ms 73036 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 62924 KB Output is correct
2 Correct 29 ms 62844 KB Output is correct
3 Correct 29 ms 62924 KB Output is correct
4 Correct 29 ms 62872 KB Output is correct
5 Correct 29 ms 62868 KB Output is correct
6 Correct 29 ms 62852 KB Output is correct
7 Correct 29 ms 62856 KB Output is correct
8 Correct 29 ms 62964 KB Output is correct
9 Correct 33 ms 62892 KB Output is correct
10 Correct 34 ms 62884 KB Output is correct
11 Correct 30 ms 62916 KB Output is correct
12 Correct 29 ms 62840 KB Output is correct
13 Correct 31 ms 62912 KB Output is correct
14 Correct 30 ms 62932 KB Output is correct
15 Correct 32 ms 62888 KB Output is correct
16 Correct 30 ms 62932 KB Output is correct
17 Correct 30 ms 62960 KB Output is correct
18 Correct 30 ms 62872 KB Output is correct
19 Correct 32 ms 62904 KB Output is correct
20 Correct 29 ms 62932 KB Output is correct
21 Correct 30 ms 62920 KB Output is correct
22 Correct 30 ms 62924 KB Output is correct
23 Correct 31 ms 62920 KB Output is correct
24 Correct 31 ms 62988 KB Output is correct
25 Correct 33 ms 62920 KB Output is correct
26 Correct 32 ms 63048 KB Output is correct
27 Correct 33 ms 63072 KB Output is correct
28 Correct 31 ms 63016 KB Output is correct
29 Correct 31 ms 62924 KB Output is correct
30 Correct 31 ms 63024 KB Output is correct
31 Correct 32 ms 62932 KB Output is correct
32 Correct 31 ms 62968 KB Output is correct
33 Correct 31 ms 63016 KB Output is correct
34 Correct 31 ms 62936 KB Output is correct
35 Correct 34 ms 62932 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 62848 KB Output is correct
2 Correct 54 ms 65356 KB Output is correct
3 Correct 53 ms 65244 KB Output is correct
4 Correct 71 ms 65316 KB Output is correct
5 Correct 76 ms 65228 KB Output is correct
6 Correct 76 ms 65228 KB Output is correct
7 Correct 57 ms 65232 KB Output is correct
8 Correct 56 ms 65256 KB Output is correct
9 Correct 83 ms 65292 KB Output is correct
10 Correct 50 ms 65228 KB Output is correct

Subtask #5
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 62924 KB Output is correct
2 Correct 29 ms 62844 KB Output is correct
3 Correct 29 ms 62924 KB Output is correct
4 Correct 29 ms 62872 KB Output is correct
5 Correct 29 ms 62868 KB Output is correct
6 Correct 29 ms 62852 KB Output is correct
7 Correct 29 ms 62856 KB Output is correct
8 Correct 29 ms 62964 KB Output is correct
9 Correct 33 ms 62892 KB Output is correct
10 Correct 34 ms 62884 KB Output is correct
11 Correct 30 ms 62916 KB Output is correct
12 Correct 29 ms 62840 KB Output is correct
13 Correct 31 ms 62912 KB Output is correct
14 Correct 30 ms 62932 KB Output is correct
15 Correct 32 ms 62888 KB Output is correct
16 Correct 30 ms 62932 KB Output is correct
17 Correct 30 ms 62960 KB Output is correct
18 Correct 30 ms 62872 KB Output is correct
19 Correct 32 ms 62904 KB Output is correct
20 Correct 29 ms 62932 KB Output is correct
21 Correct 30 ms 62920 KB Output is correct
22 Correct 30 ms 62924 KB Output is correct
23 Correct 31 ms 62920 KB Output is correct
24 Correct 31 ms 62988 KB Output is correct
25 Correct 33 ms 62920 KB Output is correct
26 Correct 32 ms 63048 KB Output is correct
27 Correct 33 ms 63072 KB Output is correct
28 Correct 31 ms 63016 KB Output is correct
29 Correct 31 ms 62924 KB Output is correct
30 Correct 31 ms 63024 KB Output is correct
31 Correct 32 ms 62932 KB Output is correct
32 Correct 31 ms 62968 KB Output is correct
33 Correct 31 ms 63016 KB Output is correct
34 Correct 31 ms 62936 KB Output is correct
35 Correct 34 ms 62932 KB Output is correct
36 Correct 30 ms 62848 KB Output is correct
37 Correct 54 ms 65356 KB Output is correct
38 Correct 53 ms 65244 KB Output is correct
39 Correct 71 ms 65316 KB Output is correct
40 Correct 76 ms 65228 KB Output is correct
41 Correct 76 ms 65228 KB Output is correct
42 Correct 57 ms 65232 KB Output is correct
43 Correct 56 ms 65256 KB Output is correct
44 Correct 83 ms 65292 KB Output is correct
45 Correct 50 ms 65228 KB Output is correct
46 Correct 31 ms 62924 KB Output is correct
47 Correct 29 ms 62956 KB Output is correct
48 Correct 30 ms 62888 KB Output is correct
49 Correct 30 ms 62932 KB Output is correct
50 Correct 31 ms 62932 KB Output is correct
51 Correct 36 ms 62960 KB Output is correct
52 Correct 30 ms 62976 KB Output is correct
53 Correct 33 ms 63028 KB Output is correct
54 Correct 30 ms 62960 KB Output is correct
55 Correct 30 ms 62960 KB Output is correct
56 Correct 30 ms 62888 KB Output is correct
57 Correct 32 ms 63028 KB Output is correct
58 Correct 31 ms 63044 KB Output is correct
59 Correct 30 ms 62932 KB Output is correct
60 Correct 32 ms 63024 KB Output is correct
61 Correct 32 ms 62932 KB Output is correct
62 Correct 31 ms 62988 KB Output is correct
63 Correct 30 ms 62932 KB Output is correct
64 Correct 33 ms 63004 KB Output is correct
65 Correct 33 ms 63024 KB Output is correct
66 Correct 32 ms 62964 KB Output is correct
67 Correct 30 ms 62960 KB Output is correct
68 Correct 30 ms 62924 KB Output is correct
69 Correct 31 ms 62932 KB Output is correct
70 Correct 30 ms 62884 KB Output is correct
71 Correct 55 ms 65252 KB Output is correct
72 Correct 53 ms 65220 KB Output is correct
73 Correct 70 ms 65276 KB Output is correct
74 Correct 79 ms 65244 KB Output is correct
75 Correct 78 ms 65308 KB Output is correct
76 Correct 55 ms 65172 KB Output is correct
77 Correct 54 ms 65228 KB Output is correct
78 Correct 84 ms 65180 KB Output is correct
79 Correct 55 ms 65292 KB Output is correct
80 Correct 61 ms 65300 KB Output is correct
81 Correct 68 ms 65220 KB Output is correct
82 Correct 68 ms 65268 KB Output is correct
83 Correct 71 ms 65228 KB Output is correct
84 Correct 71 ms 65356 KB Output is correct
85 Correct 85 ms 65296 KB Output is correct
86 Correct 73 ms 65216 KB Output is correct
87 Correct 66 ms 65308 KB Output is correct
88 Correct 79 ms 65228 KB Output is correct
89 Correct 89 ms 65236 KB Output is correct
90 Correct 84 ms 65224 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 62924 KB Output is correct
2 Correct 29 ms 62844 KB Output is correct
3 Correct 29 ms 62924 KB Output is correct
4 Correct 29 ms 62872 KB Output is correct
5 Correct 29 ms 62868 KB Output is correct
6 Correct 29 ms 62852 KB Output is correct
7 Correct 29 ms 62856 KB Output is correct
8 Correct 29 ms 62964 KB Output is correct
9 Correct 33 ms 62892 KB Output is correct
10 Correct 34 ms 62884 KB Output is correct
11 Correct 30 ms 62916 KB Output is correct
12 Correct 28 ms 62932 KB Output is correct
13 Correct 210 ms 73076 KB Output is correct
14 Correct 212 ms 73052 KB Output is correct
15 Correct 211 ms 73536 KB Output is correct
16 Correct 195 ms 73224 KB Output is correct
17 Correct 217 ms 73048 KB Output is correct
18 Correct 482 ms 73176 KB Output is correct
19 Correct 217 ms 73036 KB Output is correct
20 Correct 29 ms 62840 KB Output is correct
21 Correct 31 ms 62912 KB Output is correct
22 Correct 30 ms 62932 KB Output is correct
23 Correct 32 ms 62888 KB Output is correct
24 Correct 30 ms 62932 KB Output is correct
25 Correct 30 ms 62960 KB Output is correct
26 Correct 30 ms 62872 KB Output is correct
27 Correct 32 ms 62904 KB Output is correct
28 Correct 29 ms 62932 KB Output is correct
29 Correct 30 ms 62920 KB Output is correct
30 Correct 30 ms 62924 KB Output is correct
31 Correct 31 ms 62920 KB Output is correct
32 Correct 31 ms 62988 KB Output is correct
33 Correct 33 ms 62920 KB Output is correct
34 Correct 32 ms 63048 KB Output is correct
35 Correct 33 ms 63072 KB Output is correct
36 Correct 31 ms 63016 KB Output is correct
37 Correct 31 ms 62924 KB Output is correct
38 Correct 31 ms 63024 KB Output is correct
39 Correct 32 ms 62932 KB Output is correct
40 Correct 31 ms 62968 KB Output is correct
41 Correct 31 ms 63016 KB Output is correct
42 Correct 31 ms 62936 KB Output is correct
43 Correct 34 ms 62932 KB Output is correct
44 Correct 30 ms 62848 KB Output is correct
45 Correct 54 ms 65356 KB Output is correct
46 Correct 53 ms 65244 KB Output is correct
47 Correct 71 ms 65316 KB Output is correct
48 Correct 76 ms 65228 KB Output is correct
49 Correct 76 ms 65228 KB Output is correct
50 Correct 57 ms 65232 KB Output is correct
51 Correct 56 ms 65256 KB Output is correct
52 Correct 83 ms 65292 KB Output is correct
53 Correct 50 ms 65228 KB Output is correct
54 Correct 31 ms 62924 KB Output is correct
55 Correct 29 ms 62956 KB Output is correct
56 Correct 30 ms 62888 KB Output is correct
57 Correct 30 ms 62932 KB Output is correct
58 Correct 31 ms 62932 KB Output is correct
59 Correct 36 ms 62960 KB Output is correct
60 Correct 30 ms 62976 KB Output is correct
61 Correct 33 ms 63028 KB Output is correct
62 Correct 30 ms 62960 KB Output is correct
63 Correct 30 ms 62960 KB Output is correct
64 Correct 30 ms 62888 KB Output is correct
65 Correct 32 ms 63028 KB Output is correct
66 Correct 31 ms 63044 KB Output is correct
67 Correct 30 ms 62932 KB Output is correct
68 Correct 32 ms 63024 KB Output is correct
69 Correct 32 ms 62932 KB Output is correct
70 Correct 31 ms 62988 KB Output is correct
71 Correct 30 ms 62932 KB Output is correct
72 Correct 33 ms 63004 KB Output is correct
73 Correct 33 ms 63024 KB Output is correct
74 Correct 32 ms 62964 KB Output is correct
75 Correct 30 ms 62960 KB Output is correct
76 Correct 30 ms 62924 KB Output is correct
77 Correct 31 ms 62932 KB Output is correct
78 Correct 30 ms 62884 KB Output is correct
79 Correct 55 ms 65252 KB Output is correct
80 Correct 53 ms 65220 KB Output is correct
81 Correct 70 ms 65276 KB Output is correct
82 Correct 79 ms 65244 KB Output is correct
83 Correct 78 ms 65308 KB Output is correct
84 Correct 55 ms 65172 KB Output is correct
85 Correct 54 ms 65228 KB Output is correct
86 Correct 84 ms 65180 KB Output is correct
87 Correct 55 ms 65292 KB Output is correct
88 Correct 61 ms 65300 KB Output is correct
89 Correct 68 ms 65220 KB Output is correct
90 Correct 68 ms 65268 KB Output is correct
91 Correct 71 ms 65228 KB Output is correct
92 Correct 71 ms 65356 KB Output is correct
93 Correct 85 ms 65296 KB Output is correct
94 Correct 73 ms 65216 KB Output is correct
95 Correct 66 ms 65308 KB Output is correct
96 Correct 79 ms 65228 KB Output is correct
97 Correct 89 ms 65236 KB Output is correct
98 Correct 84 ms 65224 KB Output is correct
99 Correct 30 ms 62932 KB Output is correct
100 Correct 33 ms 62888 KB Output is correct
101 Correct 33 ms 62920 KB Output is correct
102 Correct 30 ms 62924 KB Output is correct
103 Correct 33 ms 62852 KB Output is correct
104 Correct 30 ms 62932 KB Output is correct
105 Correct 29 ms 62892 KB Output is correct
106 Correct 29 ms 62900 KB Output is correct
107 Correct 30 ms 62936 KB Output is correct
108 Correct 32 ms 62852 KB Output is correct
109 Correct 40 ms 63056 KB Output is correct
110 Correct 31 ms 62932 KB Output is correct
111 Correct 195 ms 73024 KB Output is correct
112 Correct 194 ms 73096 KB Output is correct
113 Correct 206 ms 73552 KB Output is correct
114 Correct 196 ms 73048 KB Output is correct
115 Correct 219 ms 73020 KB Output is correct
116 Correct 466 ms 73144 KB Output is correct
117 Correct 223 ms 73120 KB Output is correct
118 Correct 31 ms 63008 KB Output is correct
119 Correct 32 ms 63004 KB Output is correct
120 Correct 33 ms 62976 KB Output is correct
121 Correct 32 ms 62932 KB Output is correct
122 Correct 32 ms 62960 KB Output is correct
123 Correct 39 ms 62924 KB Output is correct
124 Correct 32 ms 62956 KB Output is correct
125 Correct 31 ms 62960 KB Output is correct
126 Correct 31 ms 62924 KB Output is correct
127 Correct 31 ms 62932 KB Output is correct
128 Correct 31 ms 62932 KB Output is correct
129 Correct 32 ms 63000 KB Output is correct
130 Correct 32 ms 62924 KB Output is correct
131 Correct 30 ms 62912 KB Output is correct
132 Correct 54 ms 65248 KB Output is correct
133 Correct 56 ms 65296 KB Output is correct
134 Correct 70 ms 65336 KB Output is correct
135 Correct 79 ms 65224 KB Output is correct
136 Correct 78 ms 65180 KB Output is correct
137 Correct 55 ms 65228 KB Output is correct
138 Correct 59 ms 65276 KB Output is correct
139 Correct 86 ms 65304 KB Output is correct
140 Correct 52 ms 65264 KB Output is correct
141 Correct 60 ms 65260 KB Output is correct
142 Correct 69 ms 65300 KB Output is correct
143 Correct 70 ms 65212 KB Output is correct
144 Correct 73 ms 65316 KB Output is correct
145 Correct 69 ms 65208 KB Output is correct
146 Correct 82 ms 65192 KB Output is correct
147 Correct 73 ms 65200 KB Output is correct
148 Correct 67 ms 65296 KB Output is correct
149 Correct 78 ms 65228 KB Output is correct
150 Correct 89 ms 65276 KB Output is correct
151 Correct 86 ms 65252 KB Output is correct
152 Correct 766 ms 103584 KB Output is correct
153 Correct 761 ms 103576 KB Output is correct
154 Correct 748 ms 103580 KB Output is correct
155 Correct 1109 ms 104092 KB Output is correct
156 Correct 1076 ms 103580 KB Output is correct
157 Correct 757 ms 103592 KB Output is correct
158 Correct 931 ms 103640 KB Output is correct
159 Correct 1696 ms 103684 KB Output is correct
160 Correct 1750 ms 103792 KB Output is correct
161 Correct 1114 ms 120288 KB Output is correct
162 Correct 893 ms 120372 KB Output is correct