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Submission #406124

# Submission time Handle Problem Language Result Execution time Memory
406124 2021-05-17T08:38:23 Z tqbfjotld The short shank; Redemption (BOI21_prison) C++14
100 / 100
 752 ms 12868 KB 
#include <bits/stdc++.h>
using namespace std;

int range_len[2000005];
pair<int,int> memo[4005][4005];
int N,D,T;

pair<int,int> operator+ (pair<int,int> a, pair<int,int> b){
    return {a.first+b.first,a.second+b.second};
}

pair<int,int> solve(int K){
    //printf("solving %lld\n",K);
    int v1 = 0;
    deque<int> inc_loc;
    deque<int> inc_loc_2;
    int v2 = 0;
    int offset = 0;
    if (range_len[N-1]>0){
        v1 = 1;
    }
    else{
        inc_loc.push_back(1);
    }
    for (int x = N-2; x>=0; x--){
        offset++;v1++;
        if (range_len[x]==0){
            v1--;
            inc_loc.push_front(1-offset);
        }
        else{
            while ((!inc_loc.empty())&&(inc_loc.front())+offset<=range_len[x]){
                inc_loc.pop_front();
                v1++;
            }
            while ((!inc_loc_2.empty())&&(inc_loc_2.front())+offset<=range_len[x]){
                inc_loc_2.pop_front();
                v2++;
            }
        }
        int other_val = v1+K;
        int last_erased = 999999999;
        while (v1+inc_loc.size()>other_val){
            //printf("hi\n");
            last_erased = inc_loc.back();
            inc_loc.pop_back();
        }
        if (last_erased!=999999999) {
                while (!inc_loc_2.empty() && (inc_loc_2.back())>last_erased)inc_loc_2.pop_back();
                inc_loc_2.push_back(last_erased);
        }

       /* int t = v2;
        for (int x = 0; x<=N; x++){
            printf("%lld ",t);
            t+=inc_loc_2.count(x-offset);
        }
        printf("\n");*/
    }
    //printf("\n");
/*
    for (int x = N-1; x>=0; x--){
        for (int o = 0; o<=N; o++){
            memo[x][o] = memo[x+1][0]+make_pair(K+(range_len[x]>0),1);
            if (o>range_len[x]) memo[x][o] = min(memo[x][o],memo[x+1][o-1]+make_pair(1,0));
            else memo[x][o] = min(memo[x][o],memo[x+1][max(0LL,range_len[x]-1)]+make_pair((range_len[x]>0),0));
            printf("%lld ",memo[x][o].second);
        }
        printf("\n");
    }
    printf("\n");
    assert(v1==memo[0][0].first);
    assert(v2==memo[0][0].second);*/
    return {v1,v2};
}

inline void scan(int &a){
    a = 0;
    char ch = ' ';
    while (ch<'0'||ch>'9') ch = getchar();
    while (ch>='0'&&ch<='9'){
        a = (a<<3)+(a<<1)+ch-'0';
        ch = getchar();
    }
}

main(){
    scan(N); scan(D); scan(T);
    for (int x = 0; x<N; x++){
        int a;
        scan(a);
        range_len[x] = T-a+1;
        if (range_len[x]<0) range_len[x] = 0;
        if (x+range_len[x]>N) range_len[x] = N-x;
    }
    int a = -1;
    int b = N;
    while (a+1<b){
        //printf("try %lld\n",(a+b)/2);
        if (solve((a+b)/2).second>D){
            a = (a+b)/2;
        }
        else b = (a+b)/2;
    }
    //for (int x = 0; x<=N; x++) solve(x);
    pair<int,int> res = solve(b);
    //printf("b = %lld, res = %lld %lld\n",b,res);
    printf("%d",res.first-res.second*b-b*(D-res.second));
}

Compilation message

prison.cpp: In function 'std::pair<int, int> solve(int)':
prison.cpp:43:33: warning: comparison of integer expressions of different signedness: 'std::deque<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |         while (v1+inc_loc.size()>other_val){
      |                ~~~~~~~~~~~~~~~~~^~~~~~~~~~
prison.cpp: At global scope:
prison.cpp:87:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   87 | main(){
      | ^~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 304 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 168 ms 2568 KB Output is correct
3 Correct 151 ms 3908 KB Output is correct
4 Correct 138 ms 3780 KB Output is correct
5 Correct 117 ms 3848 KB Output is correct
6 Correct 117 ms 4464 KB Output is correct
7 Correct 106 ms 4804 KB Output is correct
8 Correct 149 ms 4428 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 316 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 2 ms 332 KB Output is correct
31 Correct 2 ms 320 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 21 ms 716 KB Output is correct
3 Correct 22 ms 1228 KB Output is correct
4 Correct 15 ms 1100 KB Output is correct
5 Correct 16 ms 1484 KB Output is correct
6 Correct 18 ms 1484 KB Output is correct
7 Correct 21 ms 1228 KB Output is correct
8 Correct 17 ms 1280 KB Output is correct
9 Correct 14 ms 1276 KB Output is correct
10 Correct 11 ms 1120 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 316 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 2 ms 332 KB Output is correct
31 Correct 2 ms 320 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 2 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 21 ms 716 KB Output is correct
38 Correct 22 ms 1228 KB Output is correct
39 Correct 15 ms 1100 KB Output is correct
40 Correct 16 ms 1484 KB Output is correct
41 Correct 18 ms 1484 KB Output is correct
42 Correct 21 ms 1228 KB Output is correct
43 Correct 17 ms 1280 KB Output is correct
44 Correct 14 ms 1276 KB Output is correct
45 Correct 11 ms 1120 KB Output is correct
46 Correct 1 ms 304 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 312 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 304 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 1 ms 300 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 2 ms 316 KB Output is correct
58 Correct 2 ms 332 KB Output is correct
59 Correct 2 ms 312 KB Output is correct
60 Correct 2 ms 332 KB Output is correct
61 Correct 2 ms 332 KB Output is correct
62 Correct 2 ms 332 KB Output is correct
63 Correct 2 ms 332 KB Output is correct
64 Correct 2 ms 332 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 2 ms 332 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 2 ms 332 KB Output is correct
69 Correct 2 ms 332 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 21 ms 1328 KB Output is correct
72 Correct 23 ms 1292 KB Output is correct
73 Correct 18 ms 1132 KB Output is correct
74 Correct 17 ms 1484 KB Output is correct
75 Correct 15 ms 1476 KB Output is correct
76 Correct 17 ms 1228 KB Output is correct
77 Correct 17 ms 1244 KB Output is correct
78 Correct 14 ms 1260 KB Output is correct
79 Correct 11 ms 1148 KB Output is correct
80 Correct 20 ms 1228 KB Output is correct
81 Correct 25 ms 1228 KB Output is correct
82 Correct 20 ms 1240 KB Output is correct
83 Correct 20 ms 972 KB Output is correct
84 Correct 16 ms 716 KB Output is correct
85 Correct 14 ms 1484 KB Output is correct
86 Correct 16 ms 1240 KB Output is correct
87 Correct 16 ms 1252 KB Output is correct
88 Correct 14 ms 1228 KB Output is correct
89 Correct 16 ms 1256 KB Output is correct
90 Correct 13 ms 1256 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 300 KB Output is correct
13 Correct 168 ms 2568 KB Output is correct
14 Correct 151 ms 3908 KB Output is correct
15 Correct 138 ms 3780 KB Output is correct
16 Correct 117 ms 3848 KB Output is correct
17 Correct 117 ms 4464 KB Output is correct
18 Correct 106 ms 4804 KB Output is correct
19 Correct 149 ms 4428 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 308 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 2 ms 332 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 2 ms 332 KB Output is correct
34 Correct 3 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct
36 Correct 2 ms 316 KB Output is correct
37 Correct 2 ms 332 KB Output is correct
38 Correct 2 ms 332 KB Output is correct
39 Correct 2 ms 320 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 2 ms 332 KB Output is correct
43 Correct 2 ms 332 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 21 ms 716 KB Output is correct
46 Correct 22 ms 1228 KB Output is correct
47 Correct 15 ms 1100 KB Output is correct
48 Correct 16 ms 1484 KB Output is correct
49 Correct 18 ms 1484 KB Output is correct
50 Correct 21 ms 1228 KB Output is correct
51 Correct 17 ms 1280 KB Output is correct
52 Correct 14 ms 1276 KB Output is correct
53 Correct 11 ms 1120 KB Output is correct
54 Correct 1 ms 304 KB Output is correct
55 Correct 1 ms 204 KB Output is correct
56 Correct 1 ms 312 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 1 ms 204 KB Output is correct
59 Correct 1 ms 304 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 1 ms 204 KB Output is correct
63 Correct 1 ms 300 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 2 ms 316 KB Output is correct
66 Correct 2 ms 332 KB Output is correct
67 Correct 2 ms 312 KB Output is correct
68 Correct 2 ms 332 KB Output is correct
69 Correct 2 ms 332 KB Output is correct
70 Correct 2 ms 332 KB Output is correct
71 Correct 2 ms 332 KB Output is correct
72 Correct 2 ms 332 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 2 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 2 ms 332 KB Output is correct
77 Correct 2 ms 332 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 21 ms 1328 KB Output is correct
80 Correct 23 ms 1292 KB Output is correct
81 Correct 18 ms 1132 KB Output is correct
82 Correct 17 ms 1484 KB Output is correct
83 Correct 15 ms 1476 KB Output is correct
84 Correct 17 ms 1228 KB Output is correct
85 Correct 17 ms 1244 KB Output is correct
86 Correct 14 ms 1260 KB Output is correct
87 Correct 11 ms 1148 KB Output is correct
88 Correct 20 ms 1228 KB Output is correct
89 Correct 25 ms 1228 KB Output is correct
90 Correct 20 ms 1240 KB Output is correct
91 Correct 20 ms 972 KB Output is correct
92 Correct 16 ms 716 KB Output is correct
93 Correct 14 ms 1484 KB Output is correct
94 Correct 16 ms 1240 KB Output is correct
95 Correct 16 ms 1252 KB Output is correct
96 Correct 14 ms 1228 KB Output is correct
97 Correct 16 ms 1256 KB Output is correct
98 Correct 13 ms 1256 KB Output is correct
99 Correct 1 ms 204 KB Output is correct
100 Correct 1 ms 288 KB Output is correct
101 Correct 1 ms 204 KB Output is correct
102 Correct 1 ms 204 KB Output is correct
103 Correct 1 ms 204 KB Output is correct
104 Correct 1 ms 204 KB Output is correct
105 Correct 1 ms 204 KB Output is correct
106 Correct 1 ms 204 KB Output is correct
107 Correct 1 ms 204 KB Output is correct
108 Correct 1 ms 204 KB Output is correct
109 Correct 1 ms 204 KB Output is correct
110 Correct 1 ms 204 KB Output is correct
111 Correct 167 ms 3764 KB Output is correct
112 Correct 152 ms 3668 KB Output is correct
113 Correct 140 ms 3788 KB Output is correct
114 Correct 118 ms 3976 KB Output is correct
115 Correct 119 ms 4556 KB Output is correct
116 Correct 102 ms 4804 KB Output is correct
117 Correct 119 ms 4368 KB Output is correct
118 Correct 2 ms 332 KB Output is correct
119 Correct 2 ms 332 KB Output is correct
120 Correct 2 ms 332 KB Output is correct
121 Correct 2 ms 332 KB Output is correct
122 Correct 2 ms 352 KB Output is correct
123 Correct 2 ms 332 KB Output is correct
124 Correct 2 ms 332 KB Output is correct
125 Correct 2 ms 332 KB Output is correct
126 Correct 2 ms 332 KB Output is correct
127 Correct 2 ms 340 KB Output is correct
128 Correct 2 ms 332 KB Output is correct
129 Correct 2 ms 332 KB Output is correct
130 Correct 2 ms 332 KB Output is correct
131 Correct 1 ms 204 KB Output is correct
132 Correct 21 ms 1324 KB Output is correct
133 Correct 22 ms 1332 KB Output is correct
134 Correct 15 ms 1100 KB Output is correct
135 Correct 14 ms 1468 KB Output is correct
136 Correct 14 ms 1484 KB Output is correct
137 Correct 16 ms 1248 KB Output is correct
138 Correct 16 ms 1228 KB Output is correct
139 Correct 17 ms 1256 KB Output is correct
140 Correct 14 ms 1152 KB Output is correct
141 Correct 26 ms 1336 KB Output is correct
142 Correct 22 ms 1228 KB Output is correct
143 Correct 21 ms 1228 KB Output is correct
144 Correct 16 ms 1096 KB Output is correct
145 Correct 16 ms 828 KB Output is correct
146 Correct 17 ms 1484 KB Output is correct
147 Correct 16 ms 1256 KB Output is correct
148 Correct 16 ms 1248 KB Output is correct
149 Correct 14 ms 1260 KB Output is correct
150 Correct 14 ms 1164 KB Output is correct
151 Correct 13 ms 1208 KB Output is correct
152 Correct 733 ms 8152 KB Output is correct
153 Correct 752 ms 8188 KB Output is correct
154 Correct 699 ms 8080 KB Output is correct
155 Correct 515 ms 12172 KB Output is correct
156 Correct 504 ms 10692 KB Output is correct
157 Correct 504 ms 12476 KB Output is correct
158 Correct 514 ms 12484 KB Output is correct
159 Correct 481 ms 12316 KB Output is correct
160 Correct 452 ms 12268 KB Output is correct
161 Correct 355 ms 12868 KB Output is correct
162 Correct 364 ms 10856 KB Output is correct