Submission #482569

#	Time	Username	Problem	Language	Result	Execution time	Memory
482569		Hazem	Lottery (CEOI18_lot)	C++14	0 / 100	2 ms	460 KiB

lot

#include <bits/stdc++.h>
#define LL long long


using namespace std;

const int N = 1e3+1;
int a[N],val[N][N];
map<int,int>mp;
set<int>st;
vector<int>vals[N];

int main(){

    int n,l;
    scanf("%d%d",&n,&l);

    for(int i=1;i<=n;i++){
        scanf("%d",&a[i]);
        st.insert(a[i]);
    }

    int cnt = 1;
    for(auto x:st)
        mp[x] = cnt++;

    for(int i=1;i<=n;i++)
        a[i] = mp[a[i]];

    for(int i=1;i<=n;i++)
        for(int j=i+1;j<=n;j++){
            if(a[i]!=a[j])continue;
            int i1 = max(1,i-l+1);
            int j1 = j-(i-i1);
            if(j1>n-l+1)continue;
            vals[j1-i1].push_back(i+1);
            // val[i1][j1]++;
            // val[i+1][j+1]--;
        }

    // for(int i=1;i<=n;i++)
    //     for(int j=1;j<=n;j++)
    //         val[i][j] += val[i-1][j-1];
    
    for(int i=1;i<=n;i++)
        sort(vals[i].begin(),vals[i].end());

    int q;
    scanf("%d",&q);

    while(q--){
        int k;
        scanf("%d",&k);
        for(int i=1;i<=n-l+1;i++){
            int ans = 0;
            for(int j=1;j<=n-l+1;j++){
                if(i==j)continue;
                int d = abs(i-j);
                int idx = upper_bound(vals[d].begin(),vals[d].end(),min(i,j))-vals[d].begin()-1;
                if(l-(vals[d].size()-idx-1)<=k)ans++;
            }
            printf("%d ",ans);
        }
        puts("");
    }
}

Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:60:44: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |                 if(l-(vals[d].size()-idx-1)<=k)ans++;
      |                    ~~~~~~~~~~~~~~~~~~~~~~~~^~~
lot.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     scanf("%d%d",&n,&l);
      |     ~~~~~^~~~~~~~~~~~~~
lot.cpp:19:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         scanf("%d",&a[i]);
      |         ~~~~~^~~~~~~~~~~~
lot.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
lot.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         scanf("%d",&k);
      |         ~~~~~^~~~~~~~~

• Subtask 1: 0 / 25
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20