Submission #315318

#	Time	Username	Problem	Language	Result	Execution time	Memory
315318		juggernaut	Jousting tournament (IOI12_tournament)	C++14	17 / 100	1084 ms	1768 KiB

tournament

#include<bits/stdc++.h>
//#include"grader.cpp"
#ifdef EVAL
#else
#include"grader.cpp"
#endif
using namespace std;
int a[5005],N,tree[20005],flag[20005];
int gt(int v,int l,int r,int ql,int qr){
    int val=0;
    for(int i=ql;i<=qr;i++)val=max(a[i],val);
    return val;
}
void upd(int v,int l,int r,int ql,int qr,int val){
    for(int i=ql;i<=qr;i++)a[i]=max(a[i],val);
}
int GetBestPosition(int n,int C,int R,int *K,int *s,int *e){
    N=n;
    vector<int>S,E,v;
    for(int i=0;i<N;i++)v.push_back(i);
    for(int i=0;i<C;i++){
        S.push_back(v[s[i]]);
        E.push_back(v[e[i]]);
        vector<int>temp;
        for(int j=0;j<v.size();j++)if(!(s[i]<j&&j<=e[i]))temp.push_back(v[j]);
        v.clear();
        v.insert(v.end(),temp.begin(),temp.end());
    }
    int mx=-1,cnt,id;
    for(int pos=0;pos<N;pos++){
        for(int i=0;i<pos;i++)a[i]=K[i];
        a[pos]=R;
        for(int i=pos+1;i<N;i++)a[i]=K[i-1];
        cnt=0;
        for(int i=0;i<C;i++){
            int tmp=gt(1,0,N-1,S[i],E[i]);
            cnt+=(R==tmp);
            upd(1,0,N-1,S[i],E[i],tmp);
        }
        if(cnt>mx){
            mx=cnt;
            id=pos;
        }
    }
    return id;
}
/*
5 3 3
1
0
2
4
1 3
0 1
0 1
 
*/

Compilation message (stderr)

tournament.cpp: In function 'int GetBestPosition(int, int, int, int*, int*, int*)':
tournament.cpp:25:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |         for(int j=0;j<v.size();j++)if(!(s[i]<j&&j<=e[i]))temp.push_back(v[j]);
      |                     ~^~~~~~~~~
tournament.cpp:45:12: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
   45 |     return id;
      |            ^~

• Subtask 1: 17 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51