oj.uz

Submission #222471

# Submission time Handle Problem Language Result Execution time Memory
222471 2020-04-13T08:02:10 Z cheeheng Checker (COCI19_checker) C++14
110 / 110
 707 ms 146644 KB 
#include <bits/stdc++.h>
using namespace std;

#define all(x) (x).begin(), (x).end()

typedef pair<int, int> ii;

map<int, int> colour1[300005];

char colour[200005];

int deg[200005];

int X[200005];
int Y[200005];

vector<int> AdjList[200005];

int AdjMat[3005][3005];

int A[200005][20];
int B[200005][20];
int log_2[200005];

int N;

void init(){
    log_2[1] = 0;
    for(int i = 1; i <= 200000; i ++){
        log_2[i] = log_2[i/2]+1;
    }
    for(int k = 1; k <= 19; k ++){
        for(int i = 0; i+(1<<(k-1)) <= N; i ++){
            A[i][k] = min(A[i][k-1], A[i+(1<<(k-1))][k-1]);
            B[i][k] = max(B[i][k-1], B[i+(1<<(k-1))][k-1]);
        }
    }
}

/*int rminq(int i, int j){
    int log2r = log2[j-i+1];
    return min(A[i][log2r], A[j-(1<<log2r)+1][log2r]);
}*/

int rmaxq(int i, int j){
    int log2r = log_2[j-i+1];
    return max(B[i][log2r], B[j-(1<<log2r)+1][log2r]);
}


int main(){
    int ST;
    scanf("%d", &ST);

    scanf("%d", &N);

    scanf(" %s", colour);

    memset(AdjMat, 0, sizeof(AdjMat));
    memset(deg, 0, sizeof(deg));
    for(int i = 0; i < N; i ++){
        AdjList[i+1].push_back( ((i+1)%N)+1 );
        deg[i+1] ++;
        deg[((i+1)%N)+1] ++;

        colour1[i+1][((i+1)%N)+1] = colour[i]-'0';
        colour1[((i+1)%N)+1][i+1] = colour[i]-'0';

        //printf("%d %d\n", i+1, ((i+1)%N)+1);

        AdjList[((i+1)%N)+1].push_back( i+1 );

        if(ST < 3){
            AdjMat[((i+1)%N)+1][i+1] = colour[i]-'0';
            AdjMat[i+1][((i+1)%N)+1] = colour[i]-'0';
        }
    }

    vector<ii> edges;
    for(int i = 0; i < N-3; i ++){
        int a, b, c;
        scanf("%d%d%d", &a, &b, &c);

        X[i] = min(a, b);
        Y[i] = max(a, b);
        deg[a] ++;
        deg[b] ++;
        edges.push_back(ii(X[i], Y[i]));
        colour1[a][b] = c;
        colour1[b][a] = c;
        if(ST <= 2){
            AdjMat[a][b] = AdjMat[b][a] = c;
        }
        AdjList[a].push_back(b);
        AdjList[b].push_back(a);
    }
    sort(all(edges));

    for(int i = 0; i < N-3; i ++){
        A[i][0] = B[i][0] = edges[i].second;
    }

    for(int i = 0; i < N-3; i ++){
        int X, Y;
        tie(X, Y) = edges[i];
        //printf("Edge: %d %d\n", X, Y);
        int indx_min = lower_bound(all(edges), ii(X+1, -1))-edges.begin();
        int indx_max = lower_bound(all(edges), ii(Y, -1))-edges.begin();
        if(indx_min == indx_max){
            continue;
        }

        int temp_max = rmaxq(indx_min, indx_max-1);
        if(temp_max > Y){
            printf("neispravna triangulacija\n");
            return 0;
        }
    }

    if(ST == 3){printf("tocno"); return 0;}

    set<int> s;
    queue<int> q;
    for(int i = 1; i <= N; i ++){
        s.insert(i);
        //printf("%d %d\n", i, deg[i]);
        if(deg[i] == 2){
            q.push(i);
        }
    }

    while(s.size() >= 3){
        int y = q.front(); q.pop();
        auto it = s.find(y);

        int x, z;
        if(y == *s.begin()){
            x = *(--s.end());
        }else{
            it --;
            x = *it;
            it ++;
        }

        if(y == *(--s.end())){
            z = *s.begin();
        }else{
            it ++;
            z = *it;
            it --;
        }

        //printf("Triangle: %d %d %d\n", x, y, z);

        if( ((1<<(2*colour1[x][y]))+(1<<(2*colour1[y][z]))+(1<<(2*colour1[x][z]))) != 64+16+4){
            printf("neispravno bojenje");
            return 0;
        }

        deg[y] = 0;
        s.erase(y);
        deg[x] --;
        deg[z] --;
        if(deg[x] == 2){
            q.push(x);
        }
        if(deg[z] == 2){
            q.push(z);
        }
    }

    /*for(int i = 1; i <= N; i ++){
        for(int j: AdjList[i]){
            //printf("AdjList: %d %d\n", i, j);
            for(int k: AdjList[j]){
                if(i == k){continue;}
                //printf("324: %d %d %d\n", i, j, k);
                if(AdjMat[i][k]){
                    if( ((1<<AdjMat[i][k]) + (1<<AdjMat[i][j]) + (1<<AdjMat[j][k])) != 14){
                        //printf("%d%d%d\n", AdjMat[i][k], AdjMat[i][j], AdjMat[j][k]);
                        printf("neispravno bojenje");
                        return 0;
                    }
                }
            }
        }
    }*/

    printf("tocno");
    return 0;
}

Compilation message

checker.cpp: In function 'int main()':
checker.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &ST);
     ~~~~~^~~~~~~~~~~
checker.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
checker.cpp:57:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf(" %s", colour);
     ~~~~~^~~~~~~~~~~~~~~
checker.cpp:82:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &a, &b, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 55288 KB Output is correct
2 Correct 34 ms 55296 KB Output is correct
3 Correct 35 ms 55296 KB Output is correct
4 Correct 39 ms 55288 KB Output is correct
5 Correct 34 ms 55296 KB Output is correct
6 Correct 34 ms 55296 KB Output is correct
7 Correct 34 ms 55296 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 55288 KB Output is correct
2 Correct 34 ms 55296 KB Output is correct
3 Correct 35 ms 55296 KB Output is correct
4 Correct 39 ms 55288 KB Output is correct
5 Correct 34 ms 55296 KB Output is correct
6 Correct 34 ms 55296 KB Output is correct
7 Correct 34 ms 55296 KB Output is correct
8 Correct 41 ms 56192 KB Output is correct
9 Correct 38 ms 56184 KB Output is correct
10 Correct 37 ms 56064 KB Output is correct
11 Correct 38 ms 56188 KB Output is correct
12 Correct 37 ms 56184 KB Output is correct
13 Correct 38 ms 56184 KB Output is correct
14 Correct 36 ms 56192 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 522 ms 136908 KB Output is correct
2 Correct 517 ms 136872 KB Output is correct
3 Correct 502 ms 137104 KB Output is correct
4 Correct 497 ms 136932 KB Output is correct
5 Correct 488 ms 136804 KB Output is correct
6 Correct 545 ms 134652 KB Output is correct
7 Correct 530 ms 134500 KB Output is correct
8 Correct 523 ms 134500 KB Output is correct
9 Correct 528 ms 134632 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 707 ms 146532 KB Output is correct
2 Correct 695 ms 146404 KB Output is correct
3 Correct 555 ms 146404 KB Output is correct
4 Correct 571 ms 146532 KB Output is correct
5 Correct 543 ms 146408 KB Output is correct
6 Correct 636 ms 143948 KB Output is correct
7 Correct 682 ms 144016 KB Output is correct
8 Correct 578 ms 144100 KB Output is correct
9 Correct 575 ms 143844 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 55288 KB Output is correct
2 Correct 34 ms 55296 KB Output is correct
3 Correct 35 ms 55296 KB Output is correct
4 Correct 39 ms 55288 KB Output is correct
5 Correct 34 ms 55296 KB Output is correct
6 Correct 34 ms 55296 KB Output is correct
7 Correct 34 ms 55296 KB Output is correct
8 Correct 41 ms 56192 KB Output is correct
9 Correct 38 ms 56184 KB Output is correct
10 Correct 37 ms 56064 KB Output is correct
11 Correct 38 ms 56188 KB Output is correct
12 Correct 37 ms 56184 KB Output is correct
13 Correct 38 ms 56184 KB Output is correct
14 Correct 36 ms 56192 KB Output is correct
15 Correct 522 ms 136908 KB Output is correct
16 Correct 517 ms 136872 KB Output is correct
17 Correct 502 ms 137104 KB Output is correct
18 Correct 497 ms 136932 KB Output is correct
19 Correct 488 ms 136804 KB Output is correct
20 Correct 545 ms 134652 KB Output is correct
21 Correct 530 ms 134500 KB Output is correct
22 Correct 523 ms 134500 KB Output is correct
23 Correct 528 ms 134632 KB Output is correct
24 Correct 707 ms 146532 KB Output is correct
25 Correct 695 ms 146404 KB Output is correct
26 Correct 555 ms 146404 KB Output is correct
27 Correct 571 ms 146532 KB Output is correct
28 Correct 543 ms 146408 KB Output is correct
29 Correct 636 ms 143948 KB Output is correct
30 Correct 682 ms 144016 KB Output is correct
31 Correct 578 ms 144100 KB Output is correct
32 Correct 575 ms 143844 KB Output is correct
33 Correct 698 ms 146464 KB Output is correct
34 Correct 705 ms 146532 KB Output is correct
35 Correct 493 ms 136932 KB Output is correct
36 Correct 481 ms 136784 KB Output is correct
37 Correct 547 ms 146644 KB Output is correct
38 Correct 574 ms 146404 KB Output is correct
39 Correct 543 ms 146408 KB Output is correct
40 Correct 652 ms 143872 KB Output is correct
41 Correct 676 ms 144100 KB Output is correct
42 Correct 520 ms 134460 KB Output is correct
43 Correct 579 ms 143972 KB Output is correct