oj.uz

Submission #492148

# Submission time Handle Problem Language Result Execution time Memory
492148 2021-12-05T17:03:28 Z tht2005 Senior Postmen (BOI14_postmen) C++14
100 / 100
 275 ms 65060 KB 
#include <cstdio>
#include <cstdlib>
#include <cstring>

#define N           500050

struct edge_t {
    int v, f;
    edge_t *nxt, *rev;
} e[N * 2], *adj[N], *ptr = e;

int vst[N], prv[N];

void addedge(int i, int j) {
    edge_t* p = ptr++, *q = ptr++;
    p->v = j, p->f = 0, p->nxt = adj[i], p->rev = q, adj[i] = p;
    q->v = i, q->f = 0, q->nxt = adj[j], q->rev = p, adj[j] = q;
}

void dfs(int i) {
    if(vst[i]) {
        while(vst[i]) {
            vst[i] = 0;
            printf("%d ", i);
            i = prv[i];
        }
        putchar('\n');
    }
    while(adj[i]) {
        edge_t* p = adj[i]; adj[i] = adj[i]->nxt;
        if(p->f) continue;
        p->f = p->rev->f = 1;
        vst[i] = 1;
        prv[i] = p->v;
        dfs(p->v);
    }
}

int main() {
    int n, m;
    scanf("%d %d", &n, &m);
    while(m--) {
        int i, j;
        scanf("%d %d", &i, &j);
        addedge(i, j);
    }
    dfs(1);
    return 0;
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
postmen.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         scanf("%d %d", &i, &j);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 284 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 6 ms 1864 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 36 ms 10792 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 588 KB Output is correct
12 Correct 37 ms 10984 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 3 ms 680 KB Output is correct
7 Correct 5 ms 1868 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 33 ms 10720 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 1 ms 588 KB Output is correct
12 Correct 44 ms 10948 KB Output is correct
13 Correct 46 ms 12892 KB Output is correct
14 Correct 38 ms 10252 KB Output is correct
15 Correct 37 ms 12100 KB Output is correct
16 Correct 42 ms 12984 KB Output is correct
17 Correct 38 ms 8132 KB Output is correct
18 Correct 40 ms 11332 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 2 ms 552 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 2 ms 716 KB Output is correct
7 Correct 5 ms 1836 KB Output is correct
8 Correct 1 ms 460 KB Output is correct
9 Correct 34 ms 10692 KB Output is correct
10 Correct 1 ms 460 KB Output is correct
11 Correct 2 ms 588 KB Output is correct
12 Correct 38 ms 11020 KB Output is correct
13 Correct 43 ms 12984 KB Output is correct
14 Correct 40 ms 10176 KB Output is correct
15 Correct 38 ms 12104 KB Output is correct
16 Correct 39 ms 12932 KB Output is correct
17 Correct 38 ms 8116 KB Output is correct
18 Correct 42 ms 11316 KB Output is correct
19 Correct 275 ms 65060 KB Output is correct
20 Correct 239 ms 51308 KB Output is correct
21 Correct 249 ms 60144 KB Output is correct
22 Correct 241 ms 64956 KB Output is correct
23 Correct 158 ms 52804 KB Output is correct
24 Correct 258 ms 40644 KB Output is correct
25 Correct 238 ms 57032 KB Output is correct