oj.uz

Submission #749525

# Submission time Handle Problem Language Result Execution time Memory
749525 2023-05-28T07:06:44 Z 반딧불(#9967) Grapevine (NOI22_grapevine) C++17
6 / 100
 3000 ms 20424 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, q;
int arr[100002];
vector<pair<int, int> > link[100002];
ll len[100002];

ll dfs(int x, int p=-1){
    if(arr[x]) return 0;
    ll ret = 1e18;
    for(auto y: link[x]){
        if(y.first == p) continue;
        ret = min(ret, len[y.second] + dfs(y.first, x));
    }
    return ret;
}

int main(){
    map<pair<int, int>, int> mp;
    scanf("%d %d", &n, &q);
    for(int i=1; i<n; i++){
        int a, b;
        scanf("%d %d %lld", &a, &b, &len[i]);
        link[a].push_back(make_pair(b, i));
        link[b].push_back(make_pair(a, i));
        mp[make_pair(a, b)] = mp[make_pair(b, a)] = i;
    }

    while(q--){
        int t;
        scanf("%d", &t);
        if(t==1){
            int x;
            scanf("%d", &x);
            ll tmp = dfs(x);
            if(tmp > 1e17) tmp = -1;
            printf("%lld\n", tmp);
        }
        else if(t==2){
            int x;
            scanf("%d", &x);
            arr[x] = !arr[x];
        }
        else{
            int a, b; ll c;
            scanf("%d %d %lld", &a, &b, &c);
            len[mp[make_pair(a, b)]] = c;
        }
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |     scanf("%d %d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~
Main.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         scanf("%d %d %lld", &a, &b, &len[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:35:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         scanf("%d", &t);
      |         ~~~~~^~~~~~~~~~
Main.cpp:38:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |             scanf("%d", &x);
      |             ~~~~~^~~~~~~~~~
Main.cpp:45:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |             scanf("%d", &x);
      |             ~~~~~^~~~~~~~~~
Main.cpp:50:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |             scanf("%d %d %lld", &a, &b, &c);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 3020 KB Output is correct
2 Correct 11 ms 3028 KB Output is correct
3 Correct 6 ms 3028 KB Output is correct
4 Correct 7 ms 3028 KB Output is correct
5 Correct 6 ms 3028 KB Output is correct
6 Correct 4 ms 3056 KB Output is correct
7 Correct 10 ms 3028 KB Output is correct
8 Correct 10 ms 3028 KB Output is correct
9 Correct 10 ms 3072 KB Output is correct
10 Correct 17 ms 3084 KB Output is correct
11 Correct 18 ms 3056 KB Output is correct
12 Correct 15 ms 3060 KB Output is correct
13 Correct 11 ms 3072 KB Output is correct
14 Correct 11 ms 3060 KB Output is correct
15 Correct 10 ms 3028 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3062 ms 20024 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3051 ms 20424 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3046 ms 19792 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 18.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3053 ms 19636 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 3020 KB Output is correct
2 Correct 11 ms 3028 KB Output is correct
3 Correct 6 ms 3028 KB Output is correct
4 Correct 7 ms 3028 KB Output is correct
5 Correct 6 ms 3028 KB Output is correct
6 Correct 4 ms 3056 KB Output is correct
7 Correct 10 ms 3028 KB Output is correct
8 Correct 10 ms 3028 KB Output is correct
9 Correct 10 ms 3072 KB Output is correct
10 Correct 17 ms 3084 KB Output is correct
11 Correct 18 ms 3056 KB Output is correct
12 Correct 15 ms 3060 KB Output is correct
13 Correct 11 ms 3072 KB Output is correct
14 Correct 11 ms 3060 KB Output is correct
15 Correct 10 ms 3028 KB Output is correct
16 Execution timed out 3062 ms 20024 KB Time limit exceeded
17 Halted 0 ms 0 KB -