Submission #242270

#	Time	Username	Problem	Language	Result	Execution time	Memory
242270		cheeheng	Magic Tree (CEOI19_magictree)	C++14	3 / 100	81 ms	5376 KiB

magictree

#include <bits/stdc++.h>
using namespace std;

vector<int> AdjList[100005];

int d[100005];
int w[100005];

int main(){
    int n, m, k;
    scanf("%d%d%d", &n, &m, &k);

    for(int i = 2; i <= n; i ++){
        int p;
        scanf("%d", &p);

        AdjList[p].push_back(i);
    }

    bool subtask2 = true;
    long long ans2 = 0;
    for(int i = 1; i <= m; i ++){
        int x, y, z;
        scanf("%d%d%d", &x, &y, &z);
        subtask2 &= AdjList[x].empty();
        d[x] = y;
        w[x] = z;
        ans2 += w[x];
    }

    if(subtask2){
        printf("%lld", ans2);
        return 0;
    }

    return 0;
}

Compilation message (stderr)

magictree.cpp: In function 'int main()':
magictree.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
magictree.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &p);
         ~~~~~^~~~~~~~~~
magictree.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d", &x, &y, &z);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 3 / 3
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 16
• Subtask 6: 0 / 13
• Subtask 7: 0 / 22
• Subtask 8: 0 / 17