Submission #242260

#	Time	Username	Problem	Language	Result	Execution time	Memory
242260		tqbfjotld	Magic Tree (CEOI19_magictree)	C++14	11 / 100	65 ms	3060 KiB

magictree

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

int n,m,k;
int p[100005];
int d[100005];
long long w[100005];

int main(){
    scanf("%d%d%d",&n,&m,&k);
    for (int x = 1; x<n; x++){
        scanf("%d",&p[x]);
        p[x]--;
    }
    for (int x = 0; x<m; x++){
        int a,b;
        long long c;
        scanf("%d%d%lld",&a,&b,&c);
        a--;
        d[a] = b;
        w[a] = c;
    }
    vector<int> v;
    for (int x = 0; x<n; x++){
        if (w[x]==0) continue;
        if (v.empty()) v.push_back(-d[x]);
        else if (-d[x]>=v[(int)v.size()-1]){
            v.push_back(-d[x]);
        }
        else{
            int pos = upper_bound(v.begin(),v.end(),-d[x])-v.begin();
            v[pos] = -d[x];
        }
    }
    printf("%d",v.size());

}

Compilation message (stderr)

magictree.cpp: In function 'int main()':
magictree.cpp:35:25: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d",v.size());
                 ~~~~~~~~^
magictree.cpp:10:10: 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:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&p[x]);
         ~~~~~^~~~~~~~~~~~
magictree.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%lld",&a,&b,&c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

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