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답안 #962608

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
962608 2024-04-14T02:16:09 Z Cookie Segments (IZhO18_segments) C++14
100 / 100
 3583 ms 19288 KB 
#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define sz(a) (int)a.size()
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
#define mpp make_pair
const ld PI = 3.14159265359, prec = 1e-9;;
//using u128 = __uint128_t;
//const int x[4] = {1, 0, -1, 0};
//const int y[4] = {0, -1, 0, 1};
const ll mod = 1e9 + 7, pr = 31;
const int mxn = 2e5 + 5, mxq = 1e5 + 5, sq = 1000, mxv = 5e4 + 1;
//const int base = (1 <<18);
const ll inf = 1e18 + 5, neg = -69420, inf2 = 1e14;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
// have fun!
//https://usaco.org/current/data/sol_prob2_gold_open24.html
struct th{
    int len, l, r;
    bool operator <(const th &other){
        return(len < other.len);
    }
};
vt<th>all;
int n, t;
int lseg[mxn + 1], rseg[mxn + 1];
multiset<pii>seg;
vt<pii>more, bad;
vt<int>lp[sq + 1], rp[sq + 1];
void add(){
    all.clear();
    for(auto [l, r]: seg)all.pb({r - l + 1, l, r});
    sort(ALL(all));
    for(int i = 0; i < sq; i++){
        lp[i].clear(); rp[i].clear();
    }
    for(int i = 0; i < sz(all); i++){
        lp[i / sq].pb(all[i].l); rp[i / sq].pb(all[i].r);
    }
    for(int i = 0; i < sq; i++){
        sort(ALLR(lp[i])); sort(ALL(rp[i]));
    }
    more.clear(); bad.clear();
}
int solve(int l, int r, int k){
    if(r - l + 1 < k)return(0);
    int ans = 0;
    for(int i = 0; i <= (sz(all) - 1) / sq; i++){
        
        if(all[i * sq].len < k && all[min((i + 1) * sq - 1, sz(all) - 1)].len >= k){
            
            for(int j = i * sq; j <= min((i + 1) * sq - 1, sz(all) - 1); j++){
                if(all[j].len >= k && all[j].r >= l + k - 1 && all[j].l <= r - k + 1)ans++;
            }
        }else if(all[i * sq].len >= k){
            
            ans += sz(lp[i]);
            
            int le = 0, ri = sz(lp[i]) - 1, res = -1;
            while(le <= ri){
                int mid = (le + ri) >> 1;
                if(lp[i][mid] > r - k + 1){
                    res = mid; le = mid + 1;
                }else{
                    ri = mid - 1;
                }
            }
            
            ans -= (res + 1);
            le = 0, ri = sz(rp[i]) - 1, res = -1;
            while(le <= ri){
                int mid = (le + ri) >> 1;
                if(rp[i][mid] < l + k - 1){
                    res = mid; le = mid + 1;
                }else{
                    ri = mid - 1;
                }
            }
            ans -= (res + 1);
        }
    }
    for(auto [le, ri]: more){
       
        if(ri - le + 1 >= k && le <= r - k + 1 && ri >= l + k - 1)ans++;
    }
  
    
    for(auto [le, ri]: bad){
        if(ri - le + 1 >= k && le <= r - k + 1 && ri >= l + k - 1)ans--;
    }
    return(ans);
}
void solve(){
   cin >> n >> t;
   all.pb({-1, 0, 0});
   int last = 0, idseg = 0;
   while(n--){
       int idq; cin >> idq;
       if(idq == 1){
           int a, b; cin >> a >> b; 
           a = (a ^ (t * last)); b = (b ^ (t * last));
           if(a > b)swap(a, b);
           lseg[++idseg] = a; rseg[idseg] = b;
           more.pb(mpp(a, b)); seg.insert(mpp(a, b));
       }else if(idq == 2){
           int id; cin >> id;
           
           seg.erase(seg.find(mpp(lseg[id], rseg[id]))); bad.pb(mpp(lseg[id], rseg[id]));
           
       }else{
           
           int l, r, k; cin >> l >> r >> k;
           l = (l ^ (t * last)), r = (r ^ (t * last));
           if(l > r)swap(l, r);
           last = solve(l, r, k);
           //cout << l << " " << r << " " << k << "\n";
           cout << last << "\n";
           
       }
       if(sz(more) + sz(bad) == sq){
           add();
       }
   }
}
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("DATA.inp", "r", stdin);
    //freopen("DATA.out", "w", stdout);
    int tt; tt = 1;
    while(tt--){
        solve();
 
    }
    return(0);
}

Compilation message

segments.cpp: In function 'void add()':
segments.cpp:44:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   44 |     for(auto [l, r]: seg)all.pb({r - l + 1, l, r});
      |              ^
segments.cpp: In function 'int solve(int, int, int)':
segments.cpp:94:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   94 |     for(auto [le, ri]: more){
      |              ^
segments.cpp:100:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  100 |     for(auto [le, ri]: bad){
      |              ^

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 4 ms 348 KB Output is correct
5 Correct 6 ms 856 KB Output is correct
6 Correct 10 ms 600 KB Output is correct
7 Correct 6 ms 604 KB Output is correct
8 Correct 6 ms 604 KB Output is correct
9 Correct 7 ms 604 KB Output is correct
10 Correct 5 ms 604 KB Output is correct
11 Correct 12 ms 604 KB Output is correct
12 Correct 12 ms 604 KB Output is correct
13 Correct 4 ms 604 KB Output is correct
14 Correct 7 ms 604 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 348 KB Output is correct
17 Correct 7 ms 604 KB Output is correct
18 Correct 5 ms 604 KB Output is correct
19 Correct 8 ms 668 KB Output is correct
20 Correct 6 ms 600 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 683 ms 4500 KB Output is correct
2 Correct 691 ms 4480 KB Output is correct
3 Correct 682 ms 4452 KB Output is correct
4 Correct 682 ms 4828 KB Output is correct
5 Correct 885 ms 7584 KB Output is correct
6 Correct 841 ms 7740 KB Output is correct
7 Correct 674 ms 4620 KB Output is correct
8 Correct 674 ms 4308 KB Output is correct
9 Correct 656 ms 4504 KB Output is correct
10 Correct 446 ms 2352 KB Output is correct
11 Correct 383 ms 2860 KB Output is correct
12 Correct 664 ms 5996 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 67 ms 668 KB Output is correct
2 Correct 58 ms 744 KB Output is correct
3 Correct 63 ms 1012 KB Output is correct
4 Correct 67 ms 688 KB Output is correct
5 Correct 671 ms 6200 KB Output is correct
6 Correct 574 ms 5708 KB Output is correct
7 Correct 618 ms 5388 KB Output is correct
8 Correct 820 ms 7428 KB Output is correct
9 Correct 814 ms 7072 KB Output is correct
10 Correct 698 ms 5504 KB Output is correct
11 Correct 103 ms 1108 KB Output is correct
12 Correct 699 ms 6188 KB Output is correct
13 Correct 614 ms 4988 KB Output is correct
14 Correct 378 ms 2956 KB Output is correct
15 Correct 319 ms 2448 KB Output is correct
16 Correct 231 ms 1988 KB Output is correct
17 Correct 452 ms 4420 KB Output is correct
18 Correct 570 ms 4520 KB Output is correct
19 Correct 538 ms 4412 KB Output is correct
20 Correct 452 ms 4700 KB Output is correct
21 Correct 125 ms 1316 KB Output is correct
22 Correct 481 ms 3464 KB Output is correct
23 Correct 598 ms 4332 KB Output is correct
24 Correct 480 ms 3468 KB Output is correct
25 Correct 62 ms 684 KB Output is correct
26 Correct 60 ms 936 KB Output is correct
27 Correct 61 ms 912 KB Output is correct
28 Correct 59 ms 772 KB Output is correct
29 Correct 623 ms 4732 KB Output is correct
30 Correct 614 ms 4728 KB Output is correct
31 Correct 820 ms 7348 KB Output is correct
32 Correct 694 ms 5384 KB Output is correct
33 Correct 633 ms 5028 KB Output is correct
34 Correct 307 ms 2652 KB Output is correct
35 Correct 552 ms 4144 KB Output is correct
36 Correct 652 ms 5172 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 88 ms 804 KB Output is correct
2 Correct 91 ms 904 KB Output is correct
3 Correct 97 ms 804 KB Output is correct
4 Correct 100 ms 668 KB Output is correct
5 Correct 770 ms 6328 KB Output is correct
6 Correct 543 ms 2376 KB Output is correct
7 Correct 714 ms 7048 KB Output is correct
8 Correct 511 ms 2240 KB Output is correct
9 Correct 508 ms 3572 KB Output is correct
10 Correct 759 ms 6104 KB Output is correct
11 Correct 297 ms 1656 KB Output is correct
12 Correct 824 ms 7624 KB Output is correct
13 Correct 666 ms 4864 KB Output is correct
14 Correct 451 ms 3456 KB Output is correct
15 Correct 813 ms 7440 KB Output is correct
16 Correct 689 ms 5132 KB Output is correct
17 Correct 675 ms 4360 KB Output is correct
18 Correct 661 ms 4340 KB Output is correct
19 Correct 694 ms 4272 KB Output is correct
20 Correct 667 ms 4884 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 4 ms 348 KB Output is correct
5 Correct 6 ms 856 KB Output is correct
6 Correct 10 ms 600 KB Output is correct
7 Correct 6 ms 604 KB Output is correct
8 Correct 6 ms 604 KB Output is correct
9 Correct 7 ms 604 KB Output is correct
10 Correct 5 ms 604 KB Output is correct
11 Correct 12 ms 604 KB Output is correct
12 Correct 12 ms 604 KB Output is correct
13 Correct 4 ms 604 KB Output is correct
14 Correct 7 ms 604 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 348 KB Output is correct
17 Correct 7 ms 604 KB Output is correct
18 Correct 5 ms 604 KB Output is correct
19 Correct 8 ms 668 KB Output is correct
20 Correct 6 ms 600 KB Output is correct
21 Correct 683 ms 4500 KB Output is correct
22 Correct 691 ms 4480 KB Output is correct
23 Correct 682 ms 4452 KB Output is correct
24 Correct 682 ms 4828 KB Output is correct
25 Correct 885 ms 7584 KB Output is correct
26 Correct 841 ms 7740 KB Output is correct
27 Correct 674 ms 4620 KB Output is correct
28 Correct 674 ms 4308 KB Output is correct
29 Correct 656 ms 4504 KB Output is correct
30 Correct 446 ms 2352 KB Output is correct
31 Correct 383 ms 2860 KB Output is correct
32 Correct 664 ms 5996 KB Output is correct
33 Correct 88 ms 804 KB Output is correct
34 Correct 91 ms 904 KB Output is correct
35 Correct 97 ms 804 KB Output is correct
36 Correct 100 ms 668 KB Output is correct
37 Correct 770 ms 6328 KB Output is correct
38 Correct 543 ms 2376 KB Output is correct
39 Correct 714 ms 7048 KB Output is correct
40 Correct 511 ms 2240 KB Output is correct
41 Correct 508 ms 3572 KB Output is correct
42 Correct 759 ms 6104 KB Output is correct
43 Correct 297 ms 1656 KB Output is correct
44 Correct 824 ms 7624 KB Output is correct
45 Correct 666 ms 4864 KB Output is correct
46 Correct 451 ms 3456 KB Output is correct
47 Correct 813 ms 7440 KB Output is correct
48 Correct 689 ms 5132 KB Output is correct
49 Correct 675 ms 4360 KB Output is correct
50 Correct 661 ms 4340 KB Output is correct
51 Correct 694 ms 4272 KB Output is correct
52 Correct 667 ms 4884 KB Output is correct
53 Correct 93 ms 980 KB Output is correct
54 Correct 93 ms 668 KB Output is correct
55 Correct 92 ms 972 KB Output is correct
56 Correct 91 ms 856 KB Output is correct
57 Correct 616 ms 3212 KB Output is correct
58 Correct 282 ms 1620 KB Output is correct
59 Correct 600 ms 5264 KB Output is correct
60 Correct 423 ms 1360 KB Output is correct
61 Correct 658 ms 5388 KB Output is correct
62 Correct 822 ms 6904 KB Output is correct
63 Correct 822 ms 7364 KB Output is correct
64 Correct 814 ms 7100 KB Output is correct
65 Correct 331 ms 2464 KB Output is correct
66 Correct 293 ms 1896 KB Output is correct
67 Correct 708 ms 5420 KB Output is correct
68 Correct 618 ms 4548 KB Output is correct
69 Correct 667 ms 4612 KB Output is correct
70 Correct 699 ms 4504 KB Output is correct
71 Correct 670 ms 4496 KB Output is correct
72 Correct 686 ms 4824 KB Output is correct
73 Correct 406 ms 2552 KB Output is correct
74 Correct 584 ms 4028 KB Output is correct
75 Correct 855 ms 7756 KB Output is correct
76 Correct 813 ms 7372 KB Output is correct
77 Correct 91 ms 740 KB Output is correct
78 Correct 94 ms 896 KB Output is correct
79 Correct 93 ms 848 KB Output is correct
80 Correct 89 ms 852 KB Output is correct
81 Correct 591 ms 4452 KB Output is correct
82 Correct 389 ms 2500 KB Output is correct
83 Correct 291 ms 1700 KB Output is correct
84 Correct 603 ms 4156 KB Output is correct
85 Correct 695 ms 5248 KB Output is correct
86 Correct 719 ms 6220 KB Output is correct
87 Correct 503 ms 3844 KB Output is correct
88 Correct 262 ms 1812 KB Output is correct

Subtask #6
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 4 ms 600 KB Output is correct
4 Correct 4 ms 348 KB Output is correct
5 Correct 6 ms 856 KB Output is correct
6 Correct 10 ms 600 KB Output is correct
7 Correct 6 ms 604 KB Output is correct
8 Correct 6 ms 604 KB Output is correct
9 Correct 7 ms 604 KB Output is correct
10 Correct 5 ms 604 KB Output is correct
11 Correct 12 ms 604 KB Output is correct
12 Correct 12 ms 604 KB Output is correct
13 Correct 4 ms 604 KB Output is correct
14 Correct 7 ms 604 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 348 KB Output is correct
17 Correct 7 ms 604 KB Output is correct
18 Correct 5 ms 604 KB Output is correct
19 Correct 8 ms 668 KB Output is correct
20 Correct 6 ms 600 KB Output is correct
21 Correct 683 ms 4500 KB Output is correct
22 Correct 691 ms 4480 KB Output is correct
23 Correct 682 ms 4452 KB Output is correct
24 Correct 682 ms 4828 KB Output is correct
25 Correct 885 ms 7584 KB Output is correct
26 Correct 841 ms 7740 KB Output is correct
27 Correct 674 ms 4620 KB Output is correct
28 Correct 674 ms 4308 KB Output is correct
29 Correct 656 ms 4504 KB Output is correct
30 Correct 446 ms 2352 KB Output is correct
31 Correct 383 ms 2860 KB Output is correct
32 Correct 664 ms 5996 KB Output is correct
33 Correct 67 ms 668 KB Output is correct
34 Correct 58 ms 744 KB Output is correct
35 Correct 63 ms 1012 KB Output is correct
36 Correct 67 ms 688 KB Output is correct
37 Correct 671 ms 6200 KB Output is correct
38 Correct 574 ms 5708 KB Output is correct
39 Correct 618 ms 5388 KB Output is correct
40 Correct 820 ms 7428 KB Output is correct
41 Correct 814 ms 7072 KB Output is correct
42 Correct 698 ms 5504 KB Output is correct
43 Correct 103 ms 1108 KB Output is correct
44 Correct 699 ms 6188 KB Output is correct
45 Correct 614 ms 4988 KB Output is correct
46 Correct 378 ms 2956 KB Output is correct
47 Correct 319 ms 2448 KB Output is correct
48 Correct 231 ms 1988 KB Output is correct
49 Correct 452 ms 4420 KB Output is correct
50 Correct 570 ms 4520 KB Output is correct
51 Correct 538 ms 4412 KB Output is correct
52 Correct 452 ms 4700 KB Output is correct
53 Correct 125 ms 1316 KB Output is correct
54 Correct 481 ms 3464 KB Output is correct
55 Correct 598 ms 4332 KB Output is correct
56 Correct 480 ms 3468 KB Output is correct
57 Correct 62 ms 684 KB Output is correct
58 Correct 60 ms 936 KB Output is correct
59 Correct 61 ms 912 KB Output is correct
60 Correct 59 ms 772 KB Output is correct
61 Correct 623 ms 4732 KB Output is correct
62 Correct 614 ms 4728 KB Output is correct
63 Correct 820 ms 7348 KB Output is correct
64 Correct 694 ms 5384 KB Output is correct
65 Correct 633 ms 5028 KB Output is correct
66 Correct 307 ms 2652 KB Output is correct
67 Correct 552 ms 4144 KB Output is correct
68 Correct 652 ms 5172 KB Output is correct
69 Correct 88 ms 804 KB Output is correct
70 Correct 91 ms 904 KB Output is correct
71 Correct 97 ms 804 KB Output is correct
72 Correct 100 ms 668 KB Output is correct
73 Correct 770 ms 6328 KB Output is correct
74 Correct 543 ms 2376 KB Output is correct
75 Correct 714 ms 7048 KB Output is correct
76 Correct 511 ms 2240 KB Output is correct
77 Correct 508 ms 3572 KB Output is correct
78 Correct 759 ms 6104 KB Output is correct
79 Correct 297 ms 1656 KB Output is correct
80 Correct 824 ms 7624 KB Output is correct
81 Correct 666 ms 4864 KB Output is correct
82 Correct 451 ms 3456 KB Output is correct
83 Correct 813 ms 7440 KB Output is correct
84 Correct 689 ms 5132 KB Output is correct
85 Correct 675 ms 4360 KB Output is correct
86 Correct 661 ms 4340 KB Output is correct
87 Correct 694 ms 4272 KB Output is correct
88 Correct 667 ms 4884 KB Output is correct
89 Correct 93 ms 980 KB Output is correct
90 Correct 93 ms 668 KB Output is correct
91 Correct 92 ms 972 KB Output is correct
92 Correct 91 ms 856 KB Output is correct
93 Correct 616 ms 3212 KB Output is correct
94 Correct 282 ms 1620 KB Output is correct
95 Correct 600 ms 5264 KB Output is correct
96 Correct 423 ms 1360 KB Output is correct
97 Correct 658 ms 5388 KB Output is correct
98 Correct 822 ms 6904 KB Output is correct
99 Correct 822 ms 7364 KB Output is correct
100 Correct 814 ms 7100 KB Output is correct
101 Correct 331 ms 2464 KB Output is correct
102 Correct 293 ms 1896 KB Output is correct
103 Correct 708 ms 5420 KB Output is correct
104 Correct 618 ms 4548 KB Output is correct
105 Correct 667 ms 4612 KB Output is correct
106 Correct 699 ms 4504 KB Output is correct
107 Correct 670 ms 4496 KB Output is correct
108 Correct 686 ms 4824 KB Output is correct
109 Correct 406 ms 2552 KB Output is correct
110 Correct 584 ms 4028 KB Output is correct
111 Correct 855 ms 7756 KB Output is correct
112 Correct 813 ms 7372 KB Output is correct
113 Correct 91 ms 740 KB Output is correct
114 Correct 94 ms 896 KB Output is correct
115 Correct 93 ms 848 KB Output is correct
116 Correct 89 ms 852 KB Output is correct
117 Correct 591 ms 4452 KB Output is correct
118 Correct 389 ms 2500 KB Output is correct
119 Correct 291 ms 1700 KB Output is correct
120 Correct 603 ms 4156 KB Output is correct
121 Correct 695 ms 5248 KB Output is correct
122 Correct 719 ms 6220 KB Output is correct
123 Correct 503 ms 3844 KB Output is correct
124 Correct 262 ms 1812 KB Output is correct
125 Correct 196 ms 1116 KB Output is correct
126 Correct 192 ms 1108 KB Output is correct
127 Correct 236 ms 1204 KB Output is correct
128 Correct 190 ms 1256 KB Output is correct
129 Correct 179 ms 1100 KB Output is correct
130 Correct 202 ms 1104 KB Output is correct
131 Correct 1323 ms 3068 KB Output is correct
132 Correct 1845 ms 7744 KB Output is correct
133 Correct 2310 ms 10600 KB Output is correct
134 Correct 1190 ms 3992 KB Output is correct
135 Correct 2611 ms 11660 KB Output is correct
136 Correct 789 ms 1816 KB Output is correct
137 Correct 3548 ms 15284 KB Output is correct
138 Correct 2471 ms 12980 KB Output is correct
139 Correct 3032 ms 15720 KB Output is correct
140 Correct 3376 ms 18072 KB Output is correct
141 Correct 2748 ms 14428 KB Output is correct
142 Correct 621 ms 6200 KB Output is correct
143 Correct 1126 ms 8192 KB Output is correct
144 Correct 421 ms 5716 KB Output is correct
145 Correct 3301 ms 18172 KB Output is correct
146 Correct 1697 ms 10212 KB Output is correct
147 Correct 1174 ms 8420 KB Output is correct
148 Correct 1061 ms 8056 KB Output is correct
149 Correct 2105 ms 13964 KB Output is correct
150 Correct 1779 ms 13944 KB Output is correct
151 Correct 2086 ms 13820 KB Output is correct
152 Correct 2135 ms 14124 KB Output is correct
153 Correct 1781 ms 13720 KB Output is correct
154 Correct 2092 ms 13904 KB Output is correct
155 Correct 811 ms 7064 KB Output is correct
156 Correct 1261 ms 8616 KB Output is correct
157 Correct 3284 ms 17660 KB Output is correct
158 Correct 3583 ms 18052 KB Output is correct
159 Correct 2620 ms 13428 KB Output is correct
160 Correct 1851 ms 10472 KB Output is correct
161 Correct 218 ms 5436 KB Output is correct
162 Correct 205 ms 5428 KB Output is correct
163 Correct 204 ms 5532 KB Output is correct
164 Correct 277 ms 5456 KB Output is correct
165 Correct 209 ms 5304 KB Output is correct
166 Correct 204 ms 5432 KB Output is correct
167 Correct 3566 ms 19288 KB Output is correct
168 Correct 3491 ms 18928 KB Output is correct
169 Correct 3279 ms 17372 KB Output is correct
170 Correct 3208 ms 16840 KB Output is correct
171 Correct 2779 ms 14456 KB Output is correct
172 Correct 1603 ms 9840 KB Output is correct
173 Correct 3426 ms 17564 KB Output is correct
174 Correct 1673 ms 9948 KB Output is correct
175 Correct 2853 ms 14892 KB Output is correct
176 Correct 1057 ms 7912 KB Output is correct
177 Correct 2507 ms 13628 KB Output is correct
178 Correct 2380 ms 12816 KB Output is correct