oj.uz

Submission #710729

# Submission time Handle Problem Language Result Execution time Memory
710729 2023-03-15T17:17:12 Z Ronin13 Crossing (JOI21_crossing) C++14
100 / 100
 2185 ms 24008 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;
const int nmax = 1000001;
map <vector <int>, bool> used;
vector <vector <int> >  vec;

vector <int> op(vector <int> &a, vector <int> &b){
    vector <int> ans;
    for(int i = 0; i < a.size(); i++){
        int x = a[i] + b[i];
        x = -x;
        x %= 3;
        x += 3;
        x %= 3;
        ans.pb(x);
    }
    return ans;
}

void rec(vector <int> &v){
    used[v] = true;
    vec.pb(v);
    vector <vector <int> > q;
    for(auto to : vec){
        vector <int> x = op(to, v);
        if(used[x]) continue;
        q.push_back(x);
        used[x] = true;
    }
    for(auto to : q)
        rec(to);
}

int L[nmax], R[nmax];

int blsize = 501;

bool good[nmax][10];
int val[nmax];
int opt[nmax][10];

vector <int> b;

void update_block(int ind, int v, int bl){
    if(opt[bl][ind] == v)
        good[bl][ind] = true;
    else good[bl][ind] = false;
    val[bl] = v;
}

void fil(int bl){
    if(val[bl] == -1) return;
    for(int i = L[bl]; i <= R[bl]; i++)
        b[i] = val[bl];
    val[bl] = -1;
}

bool check(int bl, int ind){
    for(int i = L[bl]; i <= R[bl]; i++){
        if(b[i] != vec[ind][i]) return false;
    }
    return true;
}

void update_ran(int ind, int l, int r, int v){
    int bl = l / blsize;
    good[bl][ind] = false;
    fil(bl);
    for(int i = l; i <= r; i++)
        b[i] = v;
    good[bl][ind] = check(bl, ind);
}

bool CH(int sz){
    bool ans = false;
    for(int j = 0; j < vec.size(); j++){
        bool cur = true;
        for(int i= 0; i <= sz; i++){
            cur &= good[i][j];
        }
        ans |= cur;
    }
    return ans;
}

int main(){
   // ios_base::sync_with_stdio(false); cin.tie(0);
    int n; cin >> n;
    int cur = 1;
    int curbl = 0;
    L[0] = 0;

    for(int i = 1; i < n; i++){
        if(cur + 1 > blsize){
            R[curbl] = i - 1;
            cur = 1;
            L[++curbl] = i;
        }
        else cur++;
    }
    R[curbl] = n - 1;
    for(int i = 0; i <= curbl ;i++)
        val[i] = -1;
    string a[3];
    for(int i = 0; i < 3; i++){
        vector<int> v;
        cin >> a[i];
        for(int j = 0; j < n; j++){
            if(a[i][j] == 'O')
                v.pb(0);
            if(a[i][j] == 'J')
                v.pb(1);
            if(a[i][j] == 'I')
                v.pb(2);
        }
        //used[v] = true;
        rec(v);
        //vec.pb(v);
    }
   // cout << vec.size() << "\n";
    int q; cin >> q;
    for(int i = 0; i < n; i++){
        char c; cin >> c;
        if(c == 'J')
            b.pb(1);
        if(c == 'O')
            b.pb(0);
        if(c == 'I')
            b.pb(2);
    }
   // cout << vec.size();
    for(int i = 0; i < n; i++){
        for(int j = 0; j < vec.size(); j++)
            update_ran(j, i, i, b[i]);
    }
    for(int j = 0; j < vec.size(); j++){
        for(int i = 0; i <= curbl; i++){
            opt[i][j] = vec[j][L[i]];
            for(int x = L[i] + 1; x <= R[i]; x++)
                if(vec[j][x] != vec[j][x - 1])
                    opt[i][j] = -1;
        }
    }
    CH(curbl) ? cout << "Yes\n" : cout << "No\n";
    while(q--){
        int l,r; cin >> l >> r;
        char c; cin >> c;
        int x;
        if(c == 'O')
            x = 0;
        if(c == 'J')
            x = 1;
        if(c == 'I')
            x = 2;
        l--, r--;
        int X = l / blsize;
        int Y = r / blsize;
        if(X == Y){
            for(int j = 0; j < vec.size(); j++)
                update_ran(j, l, r, x);
        }
        else{
            for(int i = X + 1; i < Y; i++){
                for(int j = 0; j < vec.size(); j++)
                    update_block(j, x, i);
            }
            for(int j = 0; j < vec.size(); j++){
                update_ran(j, l, R[X], x);
                update_ran(j, L[Y], r, x);
            }
        }
        CH(curbl) ? cout << "Yes\n" : cout << "No\n";
    }
    return 0;
}

Compilation message

Main.cpp: In function 'std::vector<int> op(std::vector<int>&, std::vector<int>&)':
Main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i = 0; i < a.size(); i++){
      |                    ~~^~~~~~~~~~
Main.cpp: In function 'bool CH(int)':
Main.cpp:84:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     for(int j = 0; j < vec.size(); j++){
      |                    ~~^~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:141:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  141 |         for(int j = 0; j < vec.size(); j++)
      |                        ~~^~~~~~~~~~~~
Main.cpp:144:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  144 |     for(int j = 0; j < vec.size(); j++){
      |                    ~~^~~~~~~~~~~~
Main.cpp:167:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  167 |             for(int j = 0; j < vec.size(); j++)
      |                            ~~^~~~~~~~~~~~
Main.cpp:172:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  172 |                 for(int j = 0; j < vec.size(); j++)
      |                                ~~^~~~~~~~~~~~
Main.cpp:175:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  175 |             for(int j = 0; j < vec.size(); j++){
      |                            ~~^~~~~~~~~~~~
Main.cpp:53:5: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   53 |     if(opt[bl][ind] == v)
      |     ^~
Main.cpp:156:13: note: 'x' was declared here
  156 |         int x;
      |             ^

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 371 ms 852 KB Output is correct
2 Correct 381 ms 908 KB Output is correct
3 Correct 412 ms 880 KB Output is correct
4 Correct 352 ms 944 KB Output is correct
5 Correct 352 ms 912 KB Output is correct
6 Correct 354 ms 824 KB Output is correct
7 Correct 348 ms 920 KB Output is correct
8 Correct 364 ms 900 KB Output is correct
9 Correct 340 ms 844 KB Output is correct
10 Correct 349 ms 836 KB Output is correct
11 Correct 336 ms 884 KB Output is correct
12 Correct 336 ms 892 KB Output is correct
13 Correct 333 ms 896 KB Output is correct
14 Correct 336 ms 908 KB Output is correct
15 Correct 351 ms 1016 KB Output is correct
16 Correct 366 ms 904 KB Output is correct
17 Correct 340 ms 860 KB Output is correct
18 Correct 397 ms 848 KB Output is correct

Subtask #2
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 371 ms 852 KB Output is correct
2 Correct 381 ms 908 KB Output is correct
3 Correct 412 ms 880 KB Output is correct
4 Correct 352 ms 944 KB Output is correct
5 Correct 352 ms 912 KB Output is correct
6 Correct 354 ms 824 KB Output is correct
7 Correct 348 ms 920 KB Output is correct
8 Correct 364 ms 900 KB Output is correct
9 Correct 340 ms 844 KB Output is correct
10 Correct 349 ms 836 KB Output is correct
11 Correct 336 ms 884 KB Output is correct
12 Correct 336 ms 892 KB Output is correct
13 Correct 333 ms 896 KB Output is correct
14 Correct 336 ms 908 KB Output is correct
15 Correct 351 ms 1016 KB Output is correct
16 Correct 366 ms 904 KB Output is correct
17 Correct 340 ms 860 KB Output is correct
18 Correct 397 ms 848 KB Output is correct
19 Correct 848 ms 8104 KB Output is correct
20 Correct 1064 ms 8312 KB Output is correct
21 Correct 673 ms 7352 KB Output is correct
22 Correct 516 ms 6780 KB Output is correct
23 Correct 430 ms 1308 KB Output is correct
24 Correct 400 ms 1452 KB Output is correct
25 Correct 601 ms 8120 KB Output is correct
26 Correct 603 ms 8148 KB Output is correct
27 Correct 888 ms 8296 KB Output is correct
28 Correct 764 ms 8340 KB Output is correct
29 Correct 859 ms 7428 KB Output is correct
30 Correct 460 ms 1204 KB Output is correct
31 Correct 829 ms 8180 KB Output is correct
32 Correct 650 ms 7152 KB Output is correct
33 Correct 439 ms 1216 KB Output is correct
34 Correct 725 ms 8224 KB Output is correct
35 Correct 498 ms 6244 KB Output is correct
36 Correct 397 ms 1208 KB Output is correct
37 Correct 398 ms 1184 KB Output is correct
38 Correct 1177 ms 8200 KB Output is correct
39 Correct 753 ms 8284 KB Output is correct
40 Correct 521 ms 5076 KB Output is correct
41 Correct 1236 ms 8420 KB Output is correct
42 Correct 1167 ms 8644 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 371 ms 852 KB Output is correct
2 Correct 381 ms 908 KB Output is correct
3 Correct 412 ms 880 KB Output is correct
4 Correct 352 ms 944 KB Output is correct
5 Correct 352 ms 912 KB Output is correct
6 Correct 354 ms 824 KB Output is correct
7 Correct 348 ms 920 KB Output is correct
8 Correct 364 ms 900 KB Output is correct
9 Correct 340 ms 844 KB Output is correct
10 Correct 349 ms 836 KB Output is correct
11 Correct 336 ms 884 KB Output is correct
12 Correct 336 ms 892 KB Output is correct
13 Correct 333 ms 896 KB Output is correct
14 Correct 336 ms 908 KB Output is correct
15 Correct 351 ms 1016 KB Output is correct
16 Correct 366 ms 904 KB Output is correct
17 Correct 340 ms 860 KB Output is correct
18 Correct 397 ms 848 KB Output is correct
19 Correct 374 ms 884 KB Output is correct
20 Correct 507 ms 928 KB Output is correct
21 Correct 363 ms 968 KB Output is correct
22 Correct 306 ms 880 KB Output is correct
23 Correct 376 ms 848 KB Output is correct
24 Correct 337 ms 800 KB Output is correct
25 Correct 361 ms 816 KB Output is correct
26 Correct 385 ms 812 KB Output is correct
27 Correct 351 ms 808 KB Output is correct
28 Correct 366 ms 760 KB Output is correct
29 Correct 356 ms 956 KB Output is correct
30 Correct 326 ms 820 KB Output is correct
31 Correct 369 ms 972 KB Output is correct
32 Correct 390 ms 844 KB Output is correct
33 Correct 385 ms 1016 KB Output is correct
34 Correct 375 ms 844 KB Output is correct
35 Correct 405 ms 908 KB Output is correct
36 Correct 373 ms 828 KB Output is correct
37 Correct 383 ms 916 KB Output is correct
38 Correct 373 ms 972 KB Output is correct
39 Correct 414 ms 1128 KB Output is correct
40 Correct 382 ms 888 KB Output is correct
41 Correct 417 ms 864 KB Output is correct
42 Correct 375 ms 840 KB Output is correct
43 Correct 354 ms 888 KB Output is correct
44 Correct 387 ms 904 KB Output is correct

Subtask #4
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 371 ms 852 KB Output is correct
2 Correct 381 ms 908 KB Output is correct
3 Correct 412 ms 880 KB Output is correct
4 Correct 352 ms 944 KB Output is correct
5 Correct 352 ms 912 KB Output is correct
6 Correct 354 ms 824 KB Output is correct
7 Correct 348 ms 920 KB Output is correct
8 Correct 364 ms 900 KB Output is correct
9 Correct 340 ms 844 KB Output is correct
10 Correct 349 ms 836 KB Output is correct
11 Correct 336 ms 884 KB Output is correct
12 Correct 336 ms 892 KB Output is correct
13 Correct 333 ms 896 KB Output is correct
14 Correct 336 ms 908 KB Output is correct
15 Correct 351 ms 1016 KB Output is correct
16 Correct 366 ms 904 KB Output is correct
17 Correct 340 ms 860 KB Output is correct
18 Correct 397 ms 848 KB Output is correct
19 Correct 848 ms 8104 KB Output is correct
20 Correct 1064 ms 8312 KB Output is correct
21 Correct 673 ms 7352 KB Output is correct
22 Correct 516 ms 6780 KB Output is correct
23 Correct 430 ms 1308 KB Output is correct
24 Correct 400 ms 1452 KB Output is correct
25 Correct 601 ms 8120 KB Output is correct
26 Correct 603 ms 8148 KB Output is correct
27 Correct 888 ms 8296 KB Output is correct
28 Correct 764 ms 8340 KB Output is correct
29 Correct 859 ms 7428 KB Output is correct
30 Correct 460 ms 1204 KB Output is correct
31 Correct 829 ms 8180 KB Output is correct
32 Correct 650 ms 7152 KB Output is correct
33 Correct 439 ms 1216 KB Output is correct
34 Correct 725 ms 8224 KB Output is correct
35 Correct 498 ms 6244 KB Output is correct
36 Correct 397 ms 1208 KB Output is correct
37 Correct 398 ms 1184 KB Output is correct
38 Correct 1177 ms 8200 KB Output is correct
39 Correct 753 ms 8284 KB Output is correct
40 Correct 521 ms 5076 KB Output is correct
41 Correct 1236 ms 8420 KB Output is correct
42 Correct 1167 ms 8644 KB Output is correct
43 Correct 374 ms 884 KB Output is correct
44 Correct 507 ms 928 KB Output is correct
45 Correct 363 ms 968 KB Output is correct
46 Correct 306 ms 880 KB Output is correct
47 Correct 376 ms 848 KB Output is correct
48 Correct 337 ms 800 KB Output is correct
49 Correct 361 ms 816 KB Output is correct
50 Correct 385 ms 812 KB Output is correct
51 Correct 351 ms 808 KB Output is correct
52 Correct 366 ms 760 KB Output is correct
53 Correct 356 ms 956 KB Output is correct
54 Correct 326 ms 820 KB Output is correct
55 Correct 369 ms 972 KB Output is correct
56 Correct 390 ms 844 KB Output is correct
57 Correct 385 ms 1016 KB Output is correct
58 Correct 375 ms 844 KB Output is correct
59 Correct 405 ms 908 KB Output is correct
60 Correct 373 ms 828 KB Output is correct
61 Correct 383 ms 916 KB Output is correct
62 Correct 373 ms 972 KB Output is correct
63 Correct 414 ms 1128 KB Output is correct
64 Correct 382 ms 888 KB Output is correct
65 Correct 417 ms 864 KB Output is correct
66 Correct 375 ms 840 KB Output is correct
67 Correct 354 ms 888 KB Output is correct
68 Correct 387 ms 904 KB Output is correct
69 Correct 1459 ms 20184 KB Output is correct
70 Correct 2185 ms 23828 KB Output is correct
71 Correct 406 ms 1488 KB Output is correct
72 Correct 443 ms 1376 KB Output is correct
73 Correct 428 ms 1372 KB Output is correct
74 Correct 597 ms 9112 KB Output is correct
75 Correct 427 ms 1412 KB Output is correct
76 Correct 646 ms 10664 KB Output is correct
77 Correct 612 ms 9100 KB Output is correct
78 Correct 450 ms 1532 KB Output is correct
79 Correct 422 ms 1420 KB Output is correct
80 Correct 810 ms 17220 KB Output is correct
81 Correct 508 ms 2180 KB Output is correct
82 Correct 1024 ms 23664 KB Output is correct
83 Correct 1018 ms 22112 KB Output is correct
84 Correct 485 ms 2020 KB Output is correct
85 Correct 496 ms 1996 KB Output is correct
86 Correct 1289 ms 18112 KB Output is correct
87 Correct 1354 ms 23704 KB Output is correct
88 Correct 583 ms 2204 KB Output is correct
89 Correct 1183 ms 21484 KB Output is correct
90 Correct 1316 ms 23804 KB Output is correct
91 Correct 590 ms 2304 KB Output is correct
92 Correct 851 ms 17724 KB Output is correct
93 Correct 480 ms 2096 KB Output is correct
94 Correct 489 ms 2092 KB Output is correct
95 Correct 488 ms 2100 KB Output is correct
96 Correct 1228 ms 8280 KB Output is correct
97 Correct 1513 ms 23848 KB Output is correct
98 Correct 850 ms 15080 KB Output is correct
99 Correct 2111 ms 24008 KB Output is correct
100 Correct 2182 ms 23760 KB Output is correct