Submission #338557

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
338557	2020-12-23T11:53:33 Z	beksultan04	Biochips (IZhO12_biochips)	C++14	0 / 100	285 ms	524292 KB

biochips

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
const int N = 1e6+12,INF=1e9+7;
vector <int> g[N];
int l[N],cnt=1,n,m,w[N],ves[N],dp[200001][501];
void dfs(int x){
    int t = cnt,i;
    for (i=0;i<g[x].size();++i){
        dfs(g[x][i]);
    }
    ves[cnt]=w[x];
    l[cnt++]=t;
}



main(){
    int s=0,i,j;
    scan2(n,m)
    for (i=1;i<=n;++i){
        int a,b;
        scan2(a,b)
        w[i]=b;
        if (a)
            g[a].pb(i);
        else s = i;
    }
    dfs(s);

    for(int i = 0; i <= n; ++i)
        for(int j = 1; j <= m; ++j)
            dp[i][j] = -INF;
    for (i=1;i<=n;++i){
        for (j=1;j<=m;++j){
            dp[i][j] = max(dp[i-1][j],dp[l[i]-1][j-1]+ves[i]);
        }
    }
    cout <<dp[n][m];
}

Compilation message

biochips.cpp: In function 'void dfs(long long int)':
biochips.cpp:24:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for (i=0;i<g[x].size();++i){
      |              ~^~~~~~~~~~~~
biochips.cpp: At global scope:
biochips.cpp:33:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   33 | main(){
      |      ^
biochips.cpp: In function 'int main()':
biochips.cpp:12:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 | #define scan2(a,b) scanf("%lld %lld",&a, &b);
      |                    ~~~~~^~~~~~~~~~~~~~~~~~~~
biochips.cpp:35:5: note: in expansion of macro 'scan2'
   35 |     scan2(n,m)
      |     ^~~~~
biochips.cpp:12:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 | #define scan2(a,b) scanf("%lld %lld",&a, &b);
      |                    ~~~~~^~~~~~~~~~~~~~~~~~~~
biochips.cpp:38:9: note: in expansion of macro 'scan2'
   38 |         scan2(a,b)
      |         ^~~~~

Subtask #1

0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23916 KB	Output is correct
2	Correct	17 ms	24064 KB	Output is correct
3	Correct	17 ms	24172 KB	Output is correct
4	Correct	38 ms	59116 KB	Output is correct
5	Correct	42 ms	63616 KB	Output is correct
6	Correct	41 ms	63596 KB	Output is correct
7	Runtime error	285 ms	524292 KB	Execution killed with signal 9 (could be triggered by violating memory limits)
8	Halted	0 ms	0 KB	-