oj.uz

Submission #240320

# Submission time Handle Problem Language Result Execution time Memory
240320 2020-06-19T09:50:12 Z arnold518 None (JOI14_ho_t4) C++14
100 / 100
 329 ms 24680 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;

int N, M, X, H[MAXN+10];
vector<pii> adj[MAXN+10];

struct Queue
{
    int v; ll w;
    bool operator < (const Queue &p) const { return w<p.w; }
};

ll dist[MAXN+10];
bool vis[MAXN+10];

int main()
{
    int i, j;

    scanf("%d%d%d", &N, &M, &X);
    for(i=1; i<=N; i++) scanf("%d", &H[i]);
    for(i=1; i<=M; i++)
    {
        int u, v, w;
        scanf("%d%d%d", &u, &v, &w);
        if(w<=H[u]) adj[u].push_back({v, w});
        if(w<=H[v]) adj[v].push_back({u, w});
    }

    priority_queue<Queue> PQ;
    PQ.push({1, X});
    while(!PQ.empty())
    {
        Queue now=PQ.top(); PQ.pop();
        if(vis[now.v]) continue;
        vis[now.v]=1; dist[now.v]=now.w;

        for(auto nxt : adj[now.v])
        {
            if(vis[nxt.first]) continue;
            PQ.push({nxt.first, min((ll)H[nxt.first], now.w-nxt.second)});
        }
    }

    if(!vis[N]) printf("-1\n");
    else printf("%lld\n", (ll)X+H[N]-2*dist[N]);
}

Compilation message

2014_ho_t4.cpp: In function 'int main()':
2014_ho_t4.cpp:24:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
2014_ho_t4.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &N, &M, &X);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
2014_ho_t4.cpp:27:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=N; i++) scanf("%d", &H[i]);
                         ~~~~~^~~~~~~~~~~~~
2014_ho_t4.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &u, &v, &w);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 8 ms 2816 KB Output is correct
3 Correct 8 ms 2816 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2688 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct
7 Correct 7 ms 2688 KB Output is correct
8 Correct 8 ms 2944 KB Output is correct
9 Correct 7 ms 2816 KB Output is correct
10 Correct 7 ms 2816 KB Output is correct
11 Correct 6 ms 2688 KB Output is correct
12 Correct 7 ms 2816 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 7 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 6 ms 2688 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 7 ms 2688 KB Output is correct
20 Correct 7 ms 2688 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 207 ms 13816 KB Output is correct
2 Correct 242 ms 24680 KB Output is correct
3 Correct 133 ms 11892 KB Output is correct
4 Correct 229 ms 19436 KB Output is correct
5 Correct 226 ms 23780 KB Output is correct
6 Correct 13 ms 3072 KB Output is correct
7 Correct 131 ms 8440 KB Output is correct
8 Correct 247 ms 17388 KB Output is correct
9 Correct 147 ms 10744 KB Output is correct
10 Correct 101 ms 7288 KB Output is correct
11 Correct 24 ms 4352 KB Output is correct
12 Correct 144 ms 12780 KB Output is correct
13 Correct 90 ms 13044 KB Output is correct
14 Correct 141 ms 9720 KB Output is correct
15 Correct 11 ms 3200 KB Output is correct
16 Correct 220 ms 19304 KB Output is correct
17 Correct 26 ms 4352 KB Output is correct
18 Correct 29 ms 4608 KB Output is correct
19 Correct 59 ms 5496 KB Output is correct
20 Correct 37 ms 4604 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2688 KB Output is correct
2 Correct 8 ms 2816 KB Output is correct
3 Correct 8 ms 2816 KB Output is correct
4 Correct 7 ms 2816 KB Output is correct
5 Correct 7 ms 2688 KB Output is correct
6 Correct 6 ms 2688 KB Output is correct
7 Correct 7 ms 2688 KB Output is correct
8 Correct 8 ms 2944 KB Output is correct
9 Correct 7 ms 2816 KB Output is correct
10 Correct 7 ms 2816 KB Output is correct
11 Correct 6 ms 2688 KB Output is correct
12 Correct 7 ms 2816 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 7 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 6 ms 2688 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 7 ms 2688 KB Output is correct
20 Correct 7 ms 2688 KB Output is correct
21 Correct 207 ms 13816 KB Output is correct
22 Correct 242 ms 24680 KB Output is correct
23 Correct 133 ms 11892 KB Output is correct
24 Correct 229 ms 19436 KB Output is correct
25 Correct 226 ms 23780 KB Output is correct
26 Correct 13 ms 3072 KB Output is correct
27 Correct 131 ms 8440 KB Output is correct
28 Correct 247 ms 17388 KB Output is correct
29 Correct 147 ms 10744 KB Output is correct
30 Correct 101 ms 7288 KB Output is correct
31 Correct 24 ms 4352 KB Output is correct
32 Correct 144 ms 12780 KB Output is correct
33 Correct 90 ms 13044 KB Output is correct
34 Correct 141 ms 9720 KB Output is correct
35 Correct 11 ms 3200 KB Output is correct
36 Correct 220 ms 19304 KB Output is correct
37 Correct 26 ms 4352 KB Output is correct
38 Correct 29 ms 4608 KB Output is correct
39 Correct 59 ms 5496 KB Output is correct
40 Correct 37 ms 4604 KB Output is correct
41 Correct 135 ms 9084 KB Output is correct
42 Correct 36 ms 5496 KB Output is correct
43 Correct 107 ms 7708 KB Output is correct
44 Correct 97 ms 9712 KB Output is correct
45 Correct 311 ms 19432 KB Output is correct
46 Correct 21 ms 3960 KB Output is correct
47 Correct 237 ms 17264 KB Output is correct
48 Correct 329 ms 17656 KB Output is correct
49 Correct 194 ms 15340 KB Output is correct
50 Correct 245 ms 20048 KB Output is correct
51 Correct 34 ms 5112 KB Output is correct
52 Correct 191 ms 15000 KB Output is correct
53 Correct 136 ms 8952 KB Output is correct
54 Correct 142 ms 10616 KB Output is correct
55 Correct 129 ms 9568 KB Output is correct
56 Correct 266 ms 20076 KB Output is correct
57 Correct 53 ms 6904 KB Output is correct
58 Correct 10 ms 3072 KB Output is correct
59 Correct 129 ms 8696 KB Output is correct
60 Correct 53 ms 6776 KB Output is correct