Submission #503924

#	Time	Username	Problem	Language	Result	Execution time	Memory
503924		krit3379	Lottery (CEOI18_lot)	C++14	0 / 100	426 ms	4416 KiB

lot

#include<bits/stdc++.h>
using namespace std;
#define N 10005

int a[N],ans[105][N],tr[N],tq[N],que[N];

int main(){
    int n,m,l,q,i,j,k,cnt,x,now;
    scanf("%d %d",&n,&l);
    for(i=1;i<=n;i++)scanf("%d",&a[i]);
    scanf("%d",&q);
    for(i=1;i<=q;i++){
        scanf("%d",&que[i]);
        tq[i]=que[i];
    }
    sort(tq+1,tq+q+1);
    tq[q+1]=2e9;
    now=1;
    for(i=0;i<=n;i++){
        while(i>tq[now])now++;
        tr[i]=now;
    }
    m=n-l+1;
    for(k=1;k<m;k++){
        cnt=0;
        for(i=1;i<=l;i++)cnt+=(a[i]!=a[i+k]);
        i=1;
        ans[tr[cnt]][i]++;
        ans[tr[cnt]][i+k]++;
        for(i=2;i+k+l-1<=n;i++){
            cnt+=(a[i+l-1]!=a[i+k+l-1])-(a[i-1]!=a[i+k-1]);
            ans[tr[cnt]][i]++;
            ans[tr[cnt]][i+k]++;
        }
    }
    for(i=1;i<=m;i++)for(j=1;j<=105;j++)ans[j][i]+=ans[j-1][i];
    for(i=1;i<=q;i++){
        for(j=1;j<=m;j++)printf("%d ",ans[que[i]][j]);
        printf("\n");
    }
    return 0;
}

Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:8:27: warning: unused variable 'x' [-Wunused-variable]
    8 |     int n,m,l,q,i,j,k,cnt,x,now;
      |                           ^
lot.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d %d",&n,&l);
      |     ~~~~~^~~~~~~~~~~~~~~
lot.cpp:10:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     for(i=1;i<=n;i++)scanf("%d",&a[i]);
      |                      ~~~~~^~~~~~~~~~~~
lot.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
lot.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%d",&que[i]);
      |         ~~~~~^~~~~~~~~~~~~~
lot.cpp:36:50: warning: iteration 104 invokes undefined behavior [-Waggressive-loop-optimizations]
   36 |     for(i=1;i<=m;i++)for(j=1;j<=105;j++)ans[j][i]+=ans[j-1][i];
      |                                         ~~~~~~~~~^~~~~~~~~~~~~
lot.cpp:36:31: note: within this loop
   36 |     for(i=1;i<=m;i++)for(j=1;j<=105;j++)ans[j][i]+=ans[j-1][i];
      |                              ~^~~~~

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