Submission #222638

#	Time	Username	Problem	Language	Result	Execution time	Memory
222638		kingfran1907	Tenis (COI19_tenis)	C++14	51 / 100	1085 ms	5756 KiB

tenis

#include <bits/stdc++.h>

using namespace std;
const int maxn = 1e5+10;

int n, q;
int niz[3][maxn];
int pos[3][maxn];
bool bio[maxn];
int las[3];
queue< int > qs;

void bfs() {
    memset(las, -1, sizeof las);
    memset(bio, false, sizeof bio);

    bio[niz[0][0]] = true; qs.push(niz[0][0]);
    bio[niz[1][0]] = true; qs.push(niz[1][0]);
    bio[niz[2][0]] = true; qs.push(niz[2][0]);

    while (!qs.empty()) {
        int x = qs.front();
        qs.pop();

        for (int i = 0; i < 3; i++) {
            for (int j = las[i] + 1; j <= pos[i][x]; j++) {
                if (!bio[niz[i][j]]) {
                    qs.push(niz[i][j]);
                    bio[niz[i][j]] = true;
                }
            }
            las[i] = max(las[i], pos[i][x]);
        }
    }
}

int main() {
    scanf("%d%d", &n, &q);
    for (int i = 0; i < 3; i++)
        for (int j = 0; j < n; j++)
            scanf("%d", &niz[i][j]);

    for (int i = 0; i < 3; i++)
        for (int j = 0; j < n; j++)
            pos[i][niz[i][j]] = j;

    bfs();
    for (int i = 0; i < q; i++) {
        int type;
        scanf("%d", &type);
        if (type == 1) {
            int x;
            scanf("%d", &x);
            if (bio[x]) printf("DA\n");
            else printf("NE\n");
        } else {
            int p, a, b;
            scanf("%d%d%d", &p, &a, &b); p--;
            int pa = pos[p][a], pb = pos[p][b];
            swap(niz[p][pa], niz[p][pb]);
            swap(pos[p][a], pos[p][b]);
            bfs();
        }
    }
    return 0;
}

Compilation message (stderr)

tenis.cpp: In function 'int main()':
tenis.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &q);
     ~~~~~^~~~~~~~~~~~~~~~
tenis.cpp:41:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &niz[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~~~
tenis.cpp:50:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &type);
         ~~~~~^~~~~~~~~~~~~
tenis.cpp:53:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &x);
             ~~~~~^~~~~~~~~~
tenis.cpp:58:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d%d", &p, &a, &b); p--;
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 0 / 49