oj.uz

Submission #266615

# Submission time Handle Problem Language Result Execution time Memory
266615 2020-08-15T11:32:52 Z doowey Arranging Shoes (IOI19_shoes) C++14
100 / 100
 349 ms 275320 KB 
#include <bits/stdc++.h>
#include "shoes.h"

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair

const int N = (int)2e5 + 10;
queue<int> pos[2][N];
bool active[N];

int lim;
int tree[N * 2];

void upd(int x, int v){
    x += lim;
    tree[x]=v;
    x /= 2;
    while(x > 0){
        tree[x]=tree[x*2]+tree[x*2+1];
        x /= 2;
    }
}

int get(int l, int r){
    l += lim;
    r += lim;
    int res = 0;
    while(l <= r){
        if(l % 2 == 1) res += tree[l++];
        if(r % 2 == 0) res += tree[r--];
        l /= 2;
        r /= 2;
    }
    return res;
}

ll count_swaps(vector<int> s) {
    lim = (int)s.size();

    int n = (int)s.size() / 2;
    for(int i = 0 ; i < s.size(); i ++ ){
        if(s[i] < 0){
            pos[0][-s[i]].push(i);
        }
        else{
            pos[1][s[i]].push(i);
        }
        active[i]=true;
        upd(i, 1);
    }

    ll res = 0;
    int d, x;
    int nx;
    for(int i = 0 ; i < s.size(); i ++ ){
        if(!active[i]) continue;
        x = s[i];
        d = 1;
        if(x < 0){
            x = -x;
            d = 0;
        }
        nx = pos[(d ^ 1)][x].front();
        pos[(d ^ 1)][x].pop();
        pos[d][x].pop();
        res += get(i + 1, nx - 1) + d;
        active[i]=false;
        active[nx]=false;
        upd(i,0);
        upd(nx,0);
    }
    return res;
}

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     for(int i = 0 ; i < s.size(); i ++ ){
      |                     ~~^~~~~~~~~~
shoes.cpp:61:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int i = 0 ; i < s.size(); i ++ ){
      |                     ~~^~~~~~~~~~
shoes.cpp:46:9: warning: unused variable 'n' [-Wunused-variable]
   46 |     int n = (int)s.size() / 2;
      |         ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 269564 KB Output is correct
2 Correct 207 ms 269688 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 269564 KB Output is correct
2 Correct 207 ms 269688 KB Output is correct
3 Correct 195 ms 269560 KB Output is correct
4 Correct 198 ms 269560 KB Output is correct
5 Correct 198 ms 269560 KB Output is correct
6 Correct 202 ms 269688 KB Output is correct
7 Correct 202 ms 269560 KB Output is correct
8 Correct 204 ms 269560 KB Output is correct
9 Correct 203 ms 269560 KB Output is correct
10 Correct 201 ms 269560 KB Output is correct
11 Correct 201 ms 269560 KB Output is correct
12 Correct 197 ms 269560 KB Output is correct
13 Correct 205 ms 269644 KB Output is correct
14 Correct 211 ms 269596 KB Output is correct
15 Correct 201 ms 269592 KB Output is correct
16 Correct 204 ms 269560 KB Output is correct
17 Correct 197 ms 269560 KB Output is correct
18 Correct 202 ms 269688 KB Output is correct
19 Correct 199 ms 269560 KB Output is correct
20 Correct 212 ms 269564 KB Output is correct
21 Correct 206 ms 269688 KB Output is correct
22 Correct 206 ms 269688 KB Output is correct
23 Correct 227 ms 269688 KB Output is correct
24 Correct 197 ms 269560 KB Output is correct
25 Correct 217 ms 269560 KB Output is correct
26 Correct 234 ms 269688 KB Output is correct
27 Correct 204 ms 269560 KB Output is correct
28 Correct 197 ms 269560 KB Output is correct
29 Correct 209 ms 269560 KB Output is correct
30 Correct 203 ms 269560 KB Output is correct
31 Correct 199 ms 269560 KB Output is correct
32 Correct 210 ms 269560 KB Output is correct
33 Correct 204 ms 269560 KB Output is correct
34 Correct 211 ms 269608 KB Output is correct
35 Correct 201 ms 269560 KB Output is correct
36 Correct 207 ms 269588 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 269564 KB Output is correct
2 Correct 207 ms 269688 KB Output is correct
3 Correct 197 ms 269560 KB Output is correct
4 Correct 205 ms 269560 KB Output is correct
5 Correct 210 ms 269688 KB Output is correct
6 Correct 225 ms 269560 KB Output is correct
7 Correct 201 ms 269656 KB Output is correct
8 Correct 206 ms 269560 KB Output is correct
9 Correct 204 ms 269560 KB Output is correct
10 Correct 202 ms 269688 KB Output is correct
11 Correct 201 ms 269560 KB Output is correct
12 Correct 200 ms 269560 KB Output is correct
13 Correct 202 ms 269644 KB Output is correct
14 Correct 196 ms 269636 KB Output is correct
15 Correct 201 ms 269628 KB Output is correct
16 Correct 229 ms 269560 KB Output is correct
17 Correct 200 ms 269648 KB Output is correct
18 Correct 217 ms 269596 KB Output is correct
19 Correct 226 ms 269816 KB Output is correct
20 Correct 227 ms 270072 KB Output is correct
21 Correct 223 ms 270220 KB Output is correct
22 Correct 285 ms 275064 KB Output is correct
23 Correct 270 ms 275064 KB Output is correct
24 Correct 292 ms 275192 KB Output is correct
25 Correct 274 ms 274880 KB Output is correct
26 Correct 275 ms 275064 KB Output is correct
27 Correct 273 ms 274936 KB Output is correct
28 Correct 269 ms 275068 KB Output is correct
29 Correct 271 ms 275064 KB Output is correct
30 Correct 265 ms 275000 KB Output is correct
31 Correct 273 ms 275064 KB Output is correct
32 Correct 266 ms 275064 KB Output is correct
33 Correct 264 ms 274936 KB Output is correct
34 Correct 269 ms 275320 KB Output is correct
35 Correct 208 ms 269692 KB Output is correct
36 Correct 204 ms 269688 KB Output is correct
37 Correct 270 ms 275064 KB Output is correct
38 Correct 271 ms 275064 KB Output is correct
39 Correct 278 ms 275064 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 201 ms 269548 KB Output is correct
2 Correct 200 ms 269560 KB Output is correct
3 Correct 203 ms 269680 KB Output is correct
4 Correct 198 ms 269560 KB Output is correct
5 Correct 306 ms 274220 KB Output is correct
6 Correct 285 ms 274168 KB Output is correct
7 Correct 315 ms 274296 KB Output is correct
8 Correct 263 ms 275064 KB Output is correct
9 Correct 309 ms 274168 KB Output is correct
10 Correct 337 ms 274168 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 269564 KB Output is correct
2 Correct 207 ms 269688 KB Output is correct
3 Correct 195 ms 269560 KB Output is correct
4 Correct 198 ms 269560 KB Output is correct
5 Correct 198 ms 269560 KB Output is correct
6 Correct 202 ms 269688 KB Output is correct
7 Correct 202 ms 269560 KB Output is correct
8 Correct 204 ms 269560 KB Output is correct
9 Correct 203 ms 269560 KB Output is correct
10 Correct 201 ms 269560 KB Output is correct
11 Correct 201 ms 269560 KB Output is correct
12 Correct 197 ms 269560 KB Output is correct
13 Correct 205 ms 269644 KB Output is correct
14 Correct 211 ms 269596 KB Output is correct
15 Correct 201 ms 269592 KB Output is correct
16 Correct 204 ms 269560 KB Output is correct
17 Correct 197 ms 269560 KB Output is correct
18 Correct 202 ms 269688 KB Output is correct
19 Correct 199 ms 269560 KB Output is correct
20 Correct 212 ms 269564 KB Output is correct
21 Correct 206 ms 269688 KB Output is correct
22 Correct 206 ms 269688 KB Output is correct
23 Correct 227 ms 269688 KB Output is correct
24 Correct 197 ms 269560 KB Output is correct
25 Correct 217 ms 269560 KB Output is correct
26 Correct 234 ms 269688 KB Output is correct
27 Correct 204 ms 269560 KB Output is correct
28 Correct 197 ms 269560 KB Output is correct
29 Correct 209 ms 269560 KB Output is correct
30 Correct 203 ms 269560 KB Output is correct
31 Correct 199 ms 269560 KB Output is correct
32 Correct 210 ms 269560 KB Output is correct
33 Correct 204 ms 269560 KB Output is correct
34 Correct 211 ms 269608 KB Output is correct
35 Correct 201 ms 269560 KB Output is correct
36 Correct 207 ms 269588 KB Output is correct
37 Correct 201 ms 269540 KB Output is correct
38 Correct 216 ms 269628 KB Output is correct
39 Correct 206 ms 269560 KB Output is correct
40 Correct 200 ms 269560 KB Output is correct
41 Correct 207 ms 269688 KB Output is correct
42 Correct 204 ms 269704 KB Output is correct
43 Correct 197 ms 269688 KB Output is correct
44 Correct 200 ms 269688 KB Output is correct
45 Correct 201 ms 269688 KB Output is correct
46 Correct 200 ms 269688 KB Output is correct
47 Correct 225 ms 269620 KB Output is correct
48 Correct 197 ms 269696 KB Output is correct
49 Correct 209 ms 269688 KB Output is correct
50 Correct 228 ms 269756 KB Output is correct
51 Correct 239 ms 269688 KB Output is correct
52 Correct 212 ms 269688 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 202 ms 269564 KB Output is correct
2 Correct 207 ms 269688 KB Output is correct
3 Correct 195 ms 269560 KB Output is correct
4 Correct 198 ms 269560 KB Output is correct
5 Correct 198 ms 269560 KB Output is correct
6 Correct 202 ms 269688 KB Output is correct
7 Correct 202 ms 269560 KB Output is correct
8 Correct 204 ms 269560 KB Output is correct
9 Correct 203 ms 269560 KB Output is correct
10 Correct 201 ms 269560 KB Output is correct
11 Correct 201 ms 269560 KB Output is correct
12 Correct 197 ms 269560 KB Output is correct
13 Correct 205 ms 269644 KB Output is correct
14 Correct 211 ms 269596 KB Output is correct
15 Correct 201 ms 269592 KB Output is correct
16 Correct 204 ms 269560 KB Output is correct
17 Correct 197 ms 269560 KB Output is correct
18 Correct 202 ms 269688 KB Output is correct
19 Correct 199 ms 269560 KB Output is correct
20 Correct 212 ms 269564 KB Output is correct
21 Correct 206 ms 269688 KB Output is correct
22 Correct 206 ms 269688 KB Output is correct
23 Correct 227 ms 269688 KB Output is correct
24 Correct 197 ms 269560 KB Output is correct
25 Correct 217 ms 269560 KB Output is correct
26 Correct 234 ms 269688 KB Output is correct
27 Correct 204 ms 269560 KB Output is correct
28 Correct 197 ms 269560 KB Output is correct
29 Correct 209 ms 269560 KB Output is correct
30 Correct 203 ms 269560 KB Output is correct
31 Correct 199 ms 269560 KB Output is correct
32 Correct 210 ms 269560 KB Output is correct
33 Correct 204 ms 269560 KB Output is correct
34 Correct 211 ms 269608 KB Output is correct
35 Correct 201 ms 269560 KB Output is correct
36 Correct 207 ms 269588 KB Output is correct
37 Correct 197 ms 269560 KB Output is correct
38 Correct 205 ms 269560 KB Output is correct
39 Correct 210 ms 269688 KB Output is correct
40 Correct 225 ms 269560 KB Output is correct
41 Correct 201 ms 269656 KB Output is correct
42 Correct 206 ms 269560 KB Output is correct
43 Correct 204 ms 269560 KB Output is correct
44 Correct 202 ms 269688 KB Output is correct
45 Correct 201 ms 269560 KB Output is correct
46 Correct 200 ms 269560 KB Output is correct
47 Correct 202 ms 269644 KB Output is correct
48 Correct 196 ms 269636 KB Output is correct
49 Correct 201 ms 269628 KB Output is correct
50 Correct 229 ms 269560 KB Output is correct
51 Correct 200 ms 269648 KB Output is correct
52 Correct 217 ms 269596 KB Output is correct
53 Correct 226 ms 269816 KB Output is correct
54 Correct 227 ms 270072 KB Output is correct
55 Correct 223 ms 270220 KB Output is correct
56 Correct 285 ms 275064 KB Output is correct
57 Correct 270 ms 275064 KB Output is correct
58 Correct 292 ms 275192 KB Output is correct
59 Correct 274 ms 274880 KB Output is correct
60 Correct 275 ms 275064 KB Output is correct
61 Correct 273 ms 274936 KB Output is correct
62 Correct 269 ms 275068 KB Output is correct
63 Correct 271 ms 275064 KB Output is correct
64 Correct 265 ms 275000 KB Output is correct
65 Correct 273 ms 275064 KB Output is correct
66 Correct 266 ms 275064 KB Output is correct
67 Correct 264 ms 274936 KB Output is correct
68 Correct 269 ms 275320 KB Output is correct
69 Correct 208 ms 269692 KB Output is correct
70 Correct 204 ms 269688 KB Output is correct
71 Correct 270 ms 275064 KB Output is correct
72 Correct 271 ms 275064 KB Output is correct
73 Correct 278 ms 275064 KB Output is correct
74 Correct 201 ms 269548 KB Output is correct
75 Correct 200 ms 269560 KB Output is correct
76 Correct 203 ms 269680 KB Output is correct
77 Correct 198 ms 269560 KB Output is correct
78 Correct 306 ms 274220 KB Output is correct
79 Correct 285 ms 274168 KB Output is correct
80 Correct 315 ms 274296 KB Output is correct
81 Correct 263 ms 275064 KB Output is correct
82 Correct 309 ms 274168 KB Output is correct
83 Correct 337 ms 274168 KB Output is correct
84 Correct 201 ms 269540 KB Output is correct
85 Correct 216 ms 269628 KB Output is correct
86 Correct 206 ms 269560 KB Output is correct
87 Correct 200 ms 269560 KB Output is correct
88 Correct 207 ms 269688 KB Output is correct
89 Correct 204 ms 269704 KB Output is correct
90 Correct 197 ms 269688 KB Output is correct
91 Correct 200 ms 269688 KB Output is correct
92 Correct 201 ms 269688 KB Output is correct
93 Correct 200 ms 269688 KB Output is correct
94 Correct 225 ms 269620 KB Output is correct
95 Correct 197 ms 269696 KB Output is correct
96 Correct 209 ms 269688 KB Output is correct
97 Correct 228 ms 269756 KB Output is correct
98 Correct 239 ms 269688 KB Output is correct
99 Correct 212 ms 269688 KB Output is correct
100 Correct 208 ms 269608 KB Output is correct
101 Correct 200 ms 270072 KB Output is correct
102 Correct 204 ms 270072 KB Output is correct
103 Correct 349 ms 274168 KB Output is correct
104 Correct 315 ms 274296 KB Output is correct
105 Correct 320 ms 274296 KB Output is correct
106 Correct 318 ms 274208 KB Output is correct
107 Correct 294 ms 274296 KB Output is correct
108 Correct 328 ms 274188 KB Output is correct
109 Correct 279 ms 275064 KB Output is correct
110 Correct 265 ms 275192 KB Output is correct
111 Correct 333 ms 274168 KB Output is correct
112 Correct 332 ms 274188 KB Output is correct
113 Correct 291 ms 274200 KB Output is correct
114 Correct 314 ms 274168 KB Output is correct
115 Correct 343 ms 274168 KB Output is correct