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Submission #409834

# Submission time Handle Problem Language Result Execution time Memory
409834 2021-05-21T15:52:20 Z Ruxandra985 The short shank; Redemption (BOI21_prison) C++14
100 / 100
 1369 ms 313192 KB 
#include <bits/stdc++.h>
#define DIMN 2000010
using namespace std;
int v[DIMN] , w[DIMN] , f[DIMN] , out[DIMN] , mark[DIMN] , tt[DIMN];
pair <int , int> ev[2 * DIMN] , now[DIMN] , cnt[DIMN];

vector <int> g[DIMN];
priority_queue <int> h;
priority_queue <pair <int , pair <int , int> > > h2;

priority_queue <pair <int , int > > h3;

struct interval{

    int poz , tip , idx;
} interv[2 * DIMN];

int cmp (interval x , interval y){

    if (x.poz != y.poz)
        return x.poz < y.poz;
    if (x.tip != y.tip)
        return x.tip < y.tip;

    return now[x.idx].second - now[x.idx].first < now[y.idx].second - now[y.idx].first;


}

void dfs (int nod){
    int i , vecin;
    cnt[nod] = make_pair(1 , nod);

    for (i = 0 ; i < g[nod].size() ; i++){
        vecin = g[nod][i];
        dfs(vecin);
        if (cnt[vecin].first + 1 > cnt[nod].first){
            cnt[nod] = make_pair(cnt[vecin].first + 1 , cnt[vecin].second);
        }
    }


}


int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int n , d , t , sol , i , elem = 0 , e = 0 , pmax , j , m , idk , poz , tip;
    int nod , vecin;
    fscanf (fin,"%d%d%d",&n,&d,&t);
    sol = 0;
    for (i = 1 ; i <= n ; i++){
        fscanf (fin,"%d",&v[i]);
        if (v[i] > t){
            w[++elem] = i;
        }
        else sol++;
    }

    for (i = 1 ; i <= n ; i++){

        if (v[i] < t){

            /// cauti in w intervalul de influenta
            pmax = min(n , i + t - v[i]);
            ev[++e] = make_pair(i , i);
            ev[++e] = make_pair(pmax + 1 , -i);

        }

    }

    sort (ev + 1 , ev + e + 1);

    i = 1;
    j = 1;
    m = 0;
    idk = 0;

    while (j <= elem){

        while (i <= e && ev[i].first <= w[j]){

            /// procesezi ev[i]
            if (ev[i].second > 0)
                h.push(ev[i].second);
            else {
                out[-ev[i].second] = 1; /// il scoti
            }

            i++;

        }

        /// acum vezi w[j] ce tata are

        while (!h.empty() && out[h.top()])
            h.pop();

        /// h.top() e tatal lui w[j]
        if (!h.empty()){
            now[++idk] = make_pair(h.top() , w[j]);
            interv[++m] = {h.top() , 1 , idk};
            interv[++m] = {w[j] , -1 , idk};
        }


        j++;

    }

    sort (interv + 1 , interv + m + 1 , cmp);


    for (i = 1 ; i <= m ; i++){

        poz = interv[i].poz;
        tip = interv[i].tip;

        if (tip == 1){
            h2.push(make_pair(-now[interv[i].idx].second , make_pair(poz , interv[i].idx)));
        }
        else { /// tip este -1

            /// intervalul meu este la top
            h2.pop();
            /// find interval care il contine

            if (!h2.empty()){
                /// top este tatal lui
                g[h2.top().second.second].push_back(interv[i].idx);
                tt[interv[i].idx] = h2.top().second.second;
                //printf ("%d %d\n" , h2.top().second.second , interv[i].idx);
            }

        }


    }


    for (i = 1 ; i <= idk ; i++){
        if (!tt[i]){
            dfs(i);
            h3.push(cnt[i]);
        }
    }


    for (j = 1 ; j <= d ; j++){

        while (mark[h3.top().second])
            h3.pop();

        nod = h3.top().second;
        h3.pop();

        while (!mark[nod]){

            mark[nod] = 1;

            for (i = 0 ; i < g[tt[nod]].size() ; i++){
                vecin = g[tt[nod]][i];
                if (!mark[vecin])
                    h3.push(cnt[vecin]);
            }


            nod = tt[nod];
        }

    }

    for (i = 1 ; i <= idk ; i++){
        if (!mark[i])
            sol++;
    }
    fprintf (fout,"%d",sol);

    return 0;
}

Compilation message

prison.cpp: In function 'void dfs(int)':
prison.cpp:34:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for (i = 0 ; i < g[nod].size() ; i++){
      |                  ~~^~~~~~~~~~~~~~~
prison.cpp: In function 'int main()':
prison.cpp:164:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  164 |             for (i = 0 ; i < g[tt[nod]].size() ; i++){
      |                          ~~^~~~~~~~~~~~~~~~~~~
prison.cpp:52:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |     fscanf (fin,"%d%d%d",&n,&d,&t);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
prison.cpp:55:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |         fscanf (fin,"%d",&v[i]);
      |         ~~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47308 KB Output is correct
2 Correct 27 ms 47360 KB Output is correct
3 Correct 25 ms 47368 KB Output is correct
4 Correct 26 ms 47288 KB Output is correct
5 Correct 26 ms 47300 KB Output is correct
6 Correct 25 ms 47320 KB Output is correct
7 Correct 25 ms 47368 KB Output is correct
8 Correct 27 ms 47340 KB Output is correct
9 Correct 25 ms 47340 KB Output is correct
10 Correct 26 ms 47236 KB Output is correct
11 Correct 26 ms 47312 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47308 KB Output is correct
2 Correct 219 ms 74344 KB Output is correct
3 Correct 192 ms 72708 KB Output is correct
4 Correct 210 ms 78088 KB Output is correct
5 Correct 226 ms 79104 KB Output is correct
6 Correct 186 ms 75708 KB Output is correct
7 Correct 338 ms 131596 KB Output is correct
8 Correct 226 ms 79612 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47308 KB Output is correct
2 Correct 27 ms 47360 KB Output is correct
3 Correct 25 ms 47368 KB Output is correct
4 Correct 26 ms 47288 KB Output is correct
5 Correct 26 ms 47300 KB Output is correct
6 Correct 25 ms 47320 KB Output is correct
7 Correct 25 ms 47368 KB Output is correct
8 Correct 27 ms 47340 KB Output is correct
9 Correct 25 ms 47340 KB Output is correct
10 Correct 26 ms 47236 KB Output is correct
11 Correct 26 ms 47312 KB Output is correct
12 Correct 26 ms 47336 KB Output is correct
13 Correct 26 ms 47300 KB Output is correct
14 Correct 26 ms 47300 KB Output is correct
15 Correct 26 ms 47364 KB Output is correct
16 Correct 26 ms 47368 KB Output is correct
17 Correct 26 ms 47260 KB Output is correct
18 Correct 26 ms 47372 KB Output is correct
19 Correct 26 ms 47332 KB Output is correct
20 Correct 29 ms 47280 KB Output is correct
21 Correct 29 ms 47260 KB Output is correct
22 Correct 27 ms 47312 KB Output is correct
23 Correct 27 ms 47580 KB Output is correct
24 Correct 27 ms 47548 KB Output is correct
25 Correct 29 ms 47528 KB Output is correct
26 Correct 27 ms 47508 KB Output is correct
27 Correct 27 ms 47472 KB Output is correct
28 Correct 30 ms 47564 KB Output is correct
29 Correct 27 ms 47652 KB Output is correct
30 Correct 27 ms 47420 KB Output is correct
31 Correct 27 ms 47564 KB Output is correct
32 Correct 27 ms 47480 KB Output is correct
33 Correct 27 ms 47464 KB Output is correct
34 Correct 30 ms 47552 KB Output is correct
35 Correct 27 ms 47604 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 47208 KB Output is correct
2 Correct 54 ms 52240 KB Output is correct
3 Correct 53 ms 52112 KB Output is correct
4 Correct 68 ms 55176 KB Output is correct
5 Correct 67 ms 56856 KB Output is correct
6 Correct 67 ms 57056 KB Output is correct
7 Correct 45 ms 51456 KB Output is correct
8 Correct 56 ms 51268 KB Output is correct
9 Correct 71 ms 59772 KB Output is correct
10 Correct 47 ms 51008 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47308 KB Output is correct
2 Correct 27 ms 47360 KB Output is correct
3 Correct 25 ms 47368 KB Output is correct
4 Correct 26 ms 47288 KB Output is correct
5 Correct 26 ms 47300 KB Output is correct
6 Correct 25 ms 47320 KB Output is correct
7 Correct 25 ms 47368 KB Output is correct
8 Correct 27 ms 47340 KB Output is correct
9 Correct 25 ms 47340 KB Output is correct
10 Correct 26 ms 47236 KB Output is correct
11 Correct 26 ms 47312 KB Output is correct
12 Correct 26 ms 47336 KB Output is correct
13 Correct 26 ms 47300 KB Output is correct
14 Correct 26 ms 47300 KB Output is correct
15 Correct 26 ms 47364 KB Output is correct
16 Correct 26 ms 47368 KB Output is correct
17 Correct 26 ms 47260 KB Output is correct
18 Correct 26 ms 47372 KB Output is correct
19 Correct 26 ms 47332 KB Output is correct
20 Correct 29 ms 47280 KB Output is correct
21 Correct 29 ms 47260 KB Output is correct
22 Correct 27 ms 47312 KB Output is correct
23 Correct 27 ms 47580 KB Output is correct
24 Correct 27 ms 47548 KB Output is correct
25 Correct 29 ms 47528 KB Output is correct
26 Correct 27 ms 47508 KB Output is correct
27 Correct 27 ms 47472 KB Output is correct
28 Correct 30 ms 47564 KB Output is correct
29 Correct 27 ms 47652 KB Output is correct
30 Correct 27 ms 47420 KB Output is correct
31 Correct 27 ms 47564 KB Output is correct
32 Correct 27 ms 47480 KB Output is correct
33 Correct 27 ms 47464 KB Output is correct
34 Correct 30 ms 47552 KB Output is correct
35 Correct 27 ms 47604 KB Output is correct
36 Correct 26 ms 47208 KB Output is correct
37 Correct 54 ms 52240 KB Output is correct
38 Correct 53 ms 52112 KB Output is correct
39 Correct 68 ms 55176 KB Output is correct
40 Correct 67 ms 56856 KB Output is correct
41 Correct 67 ms 57056 KB Output is correct
42 Correct 45 ms 51456 KB Output is correct
43 Correct 56 ms 51268 KB Output is correct
44 Correct 71 ms 59772 KB Output is correct
45 Correct 47 ms 51008 KB Output is correct
46 Correct 26 ms 47288 KB Output is correct
47 Correct 27 ms 47240 KB Output is correct
48 Correct 26 ms 47284 KB Output is correct
49 Correct 27 ms 47364 KB Output is correct
50 Correct 26 ms 47256 KB Output is correct
51 Correct 31 ms 47300 KB Output is correct
52 Correct 27 ms 47256 KB Output is correct
53 Correct 25 ms 47288 KB Output is correct
54 Correct 26 ms 47308 KB Output is correct
55 Correct 26 ms 47316 KB Output is correct
56 Correct 25 ms 47248 KB Output is correct
57 Correct 27 ms 47492 KB Output is correct
58 Correct 27 ms 47472 KB Output is correct
59 Correct 28 ms 47600 KB Output is correct
60 Correct 28 ms 47564 KB Output is correct
61 Correct 27 ms 47548 KB Output is correct
62 Correct 27 ms 47564 KB Output is correct
63 Correct 28 ms 47564 KB Output is correct
64 Correct 26 ms 47512 KB Output is correct
65 Correct 26 ms 47552 KB Output is correct
66 Correct 27 ms 47428 KB Output is correct
67 Correct 27 ms 47444 KB Output is correct
68 Correct 28 ms 47588 KB Output is correct
69 Correct 26 ms 47532 KB Output is correct
70 Correct 25 ms 47308 KB Output is correct
71 Correct 53 ms 52292 KB Output is correct
72 Correct 53 ms 52080 KB Output is correct
73 Correct 68 ms 55240 KB Output is correct
74 Correct 68 ms 56900 KB Output is correct
75 Correct 70 ms 57004 KB Output is correct
76 Correct 55 ms 51460 KB Output is correct
77 Correct 47 ms 51268 KB Output is correct
78 Correct 69 ms 59860 KB Output is correct
79 Correct 46 ms 51096 KB Output is correct
80 Correct 54 ms 52264 KB Output is correct
81 Correct 58 ms 52388 KB Output is correct
82 Correct 62 ms 52276 KB Output is correct
83 Correct 65 ms 53892 KB Output is correct
84 Correct 54 ms 52200 KB Output is correct
85 Correct 78 ms 57840 KB Output is correct
86 Correct 57 ms 53376 KB Output is correct
87 Correct 48 ms 50956 KB Output is correct
88 Correct 80 ms 57784 KB Output is correct
89 Correct 75 ms 59448 KB Output is correct
90 Correct 66 ms 56716 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 47308 KB Output is correct
2 Correct 27 ms 47360 KB Output is correct
3 Correct 25 ms 47368 KB Output is correct
4 Correct 26 ms 47288 KB Output is correct
5 Correct 26 ms 47300 KB Output is correct
6 Correct 25 ms 47320 KB Output is correct
7 Correct 25 ms 47368 KB Output is correct
8 Correct 27 ms 47340 KB Output is correct
9 Correct 25 ms 47340 KB Output is correct
10 Correct 26 ms 47236 KB Output is correct
11 Correct 26 ms 47312 KB Output is correct
12 Correct 25 ms 47308 KB Output is correct
13 Correct 219 ms 74344 KB Output is correct
14 Correct 192 ms 72708 KB Output is correct
15 Correct 210 ms 78088 KB Output is correct
16 Correct 226 ms 79104 KB Output is correct
17 Correct 186 ms 75708 KB Output is correct
18 Correct 338 ms 131596 KB Output is correct
19 Correct 226 ms 79612 KB Output is correct
20 Correct 26 ms 47336 KB Output is correct
21 Correct 26 ms 47300 KB Output is correct
22 Correct 26 ms 47300 KB Output is correct
23 Correct 26 ms 47364 KB Output is correct
24 Correct 26 ms 47368 KB Output is correct
25 Correct 26 ms 47260 KB Output is correct
26 Correct 26 ms 47372 KB Output is correct
27 Correct 26 ms 47332 KB Output is correct
28 Correct 29 ms 47280 KB Output is correct
29 Correct 29 ms 47260 KB Output is correct
30 Correct 27 ms 47312 KB Output is correct
31 Correct 27 ms 47580 KB Output is correct
32 Correct 27 ms 47548 KB Output is correct
33 Correct 29 ms 47528 KB Output is correct
34 Correct 27 ms 47508 KB Output is correct
35 Correct 27 ms 47472 KB Output is correct
36 Correct 30 ms 47564 KB Output is correct
37 Correct 27 ms 47652 KB Output is correct
38 Correct 27 ms 47420 KB Output is correct
39 Correct 27 ms 47564 KB Output is correct
40 Correct 27 ms 47480 KB Output is correct
41 Correct 27 ms 47464 KB Output is correct
42 Correct 30 ms 47552 KB Output is correct
43 Correct 27 ms 47604 KB Output is correct
44 Correct 26 ms 47208 KB Output is correct
45 Correct 54 ms 52240 KB Output is correct
46 Correct 53 ms 52112 KB Output is correct
47 Correct 68 ms 55176 KB Output is correct
48 Correct 67 ms 56856 KB Output is correct
49 Correct 67 ms 57056 KB Output is correct
50 Correct 45 ms 51456 KB Output is correct
51 Correct 56 ms 51268 KB Output is correct
52 Correct 71 ms 59772 KB Output is correct
53 Correct 47 ms 51008 KB Output is correct
54 Correct 26 ms 47288 KB Output is correct
55 Correct 27 ms 47240 KB Output is correct
56 Correct 26 ms 47284 KB Output is correct
57 Correct 27 ms 47364 KB Output is correct
58 Correct 26 ms 47256 KB Output is correct
59 Correct 31 ms 47300 KB Output is correct
60 Correct 27 ms 47256 KB Output is correct
61 Correct 25 ms 47288 KB Output is correct
62 Correct 26 ms 47308 KB Output is correct
63 Correct 26 ms 47316 KB Output is correct
64 Correct 25 ms 47248 KB Output is correct
65 Correct 27 ms 47492 KB Output is correct
66 Correct 27 ms 47472 KB Output is correct
67 Correct 28 ms 47600 KB Output is correct
68 Correct 28 ms 47564 KB Output is correct
69 Correct 27 ms 47548 KB Output is correct
70 Correct 27 ms 47564 KB Output is correct
71 Correct 28 ms 47564 KB Output is correct
72 Correct 26 ms 47512 KB Output is correct
73 Correct 26 ms 47552 KB Output is correct
74 Correct 27 ms 47428 KB Output is correct
75 Correct 27 ms 47444 KB Output is correct
76 Correct 28 ms 47588 KB Output is correct
77 Correct 26 ms 47532 KB Output is correct
78 Correct 25 ms 47308 KB Output is correct
79 Correct 53 ms 52292 KB Output is correct
80 Correct 53 ms 52080 KB Output is correct
81 Correct 68 ms 55240 KB Output is correct
82 Correct 68 ms 56900 KB Output is correct
83 Correct 70 ms 57004 KB Output is correct
84 Correct 55 ms 51460 KB Output is correct
85 Correct 47 ms 51268 KB Output is correct
86 Correct 69 ms 59860 KB Output is correct
87 Correct 46 ms 51096 KB Output is correct
88 Correct 54 ms 52264 KB Output is correct
89 Correct 58 ms 52388 KB Output is correct
90 Correct 62 ms 52276 KB Output is correct
91 Correct 65 ms 53892 KB Output is correct
92 Correct 54 ms 52200 KB Output is correct
93 Correct 78 ms 57840 KB Output is correct
94 Correct 57 ms 53376 KB Output is correct
95 Correct 48 ms 50956 KB Output is correct
96 Correct 80 ms 57784 KB Output is correct
97 Correct 75 ms 59448 KB Output is correct
98 Correct 66 ms 56716 KB Output is correct
99 Correct 28 ms 47316 KB Output is correct
100 Correct 27 ms 47300 KB Output is correct
101 Correct 27 ms 47352 KB Output is correct
102 Correct 27 ms 47308 KB Output is correct
103 Correct 30 ms 47308 KB Output is correct
104 Correct 30 ms 47312 KB Output is correct
105 Correct 27 ms 47304 KB Output is correct
106 Correct 26 ms 47248 KB Output is correct
107 Correct 27 ms 47300 KB Output is correct
108 Correct 26 ms 47372 KB Output is correct
109 Correct 26 ms 47268 KB Output is correct
110 Correct 31 ms 47308 KB Output is correct
111 Correct 223 ms 77760 KB Output is correct
112 Correct 199 ms 72748 KB Output is correct
113 Correct 216 ms 78080 KB Output is correct
114 Correct 237 ms 79164 KB Output is correct
115 Correct 187 ms 75656 KB Output is correct
116 Correct 341 ms 131520 KB Output is correct
117 Correct 207 ms 79640 KB Output is correct
118 Correct 28 ms 47584 KB Output is correct
119 Correct 27 ms 47476 KB Output is correct
120 Correct 27 ms 47536 KB Output is correct
121 Correct 28 ms 47552 KB Output is correct
122 Correct 28 ms 47524 KB Output is correct
123 Correct 27 ms 47476 KB Output is correct
124 Correct 28 ms 47504 KB Output is correct
125 Correct 28 ms 47528 KB Output is correct
126 Correct 27 ms 47568 KB Output is correct
127 Correct 28 ms 47416 KB Output is correct
128 Correct 27 ms 47508 KB Output is correct
129 Correct 30 ms 47564 KB Output is correct
130 Correct 27 ms 47584 KB Output is correct
131 Correct 27 ms 47284 KB Output is correct
132 Correct 54 ms 52328 KB Output is correct
133 Correct 55 ms 52104 KB Output is correct
134 Correct 69 ms 55244 KB Output is correct
135 Correct 69 ms 56808 KB Output is correct
136 Correct 68 ms 57052 KB Output is correct
137 Correct 46 ms 51544 KB Output is correct
138 Correct 49 ms 51188 KB Output is correct
139 Correct 73 ms 59816 KB Output is correct
140 Correct 46 ms 51072 KB Output is correct
141 Correct 55 ms 52236 KB Output is correct
142 Correct 56 ms 52416 KB Output is correct
143 Correct 57 ms 52256 KB Output is correct
144 Correct 64 ms 53888 KB Output is correct
145 Correct 54 ms 52144 KB Output is correct
146 Correct 76 ms 57708 KB Output is correct
147 Correct 60 ms 53252 KB Output is correct
148 Correct 50 ms 50968 KB Output is correct
149 Correct 64 ms 57788 KB Output is correct
150 Correct 70 ms 59448 KB Output is correct
151 Correct 64 ms 56684 KB Output is correct
152 Correct 887 ms 172132 KB Output is correct
153 Correct 837 ms 174200 KB Output is correct
154 Correct 782 ms 167704 KB Output is correct
155 Correct 1157 ms 216944 KB Output is correct
156 Correct 888 ms 182492 KB Output is correct
157 Correct 549 ms 129320 KB Output is correct
158 Correct 703 ms 178432 KB Output is correct
159 Correct 1233 ms 313192 KB Output is correct
160 Correct 1369 ms 296496 KB Output is correct
161 Correct 699 ms 133148 KB Output is correct
162 Correct 707 ms 140904 KB Output is correct