#include <stdio.h>































































































































































































































































#define N 50000































































































































































































































































#define INF 1500000































































































































































































































































































































































































































































































































int s[N + 1];































































































































































































































































int a[N + 1];































































































































































































































































































































































































































































































































int oof( int a, int b ) {































































































































































































































































  if ( a > b )































































































































































































































































    return a;































































































































































































































































  return b;































































































































































































































































}































































































































































































































































































































































































































































































































int main() {































































































































































































































































  FILE *fin, *fout;































































































































































































































































  int n, k, i, sc, smax, stmax, drmax, stc;































































































































































































































































  fin = fopen( "secv2.in", "r" );































































































































































































































































  fscanf( fin, "%d%d", &n, &k );































































































































































































































































  for ( i = 1; i <= n; i ++ ) {































































































































































































































































    fscanf( fin, "%d", &a[i] );































































































































































































































































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  }































































































































































































































































  sc = smax = s[k];































































































































































































































































  stc = stmax = 1;































































































































































































































































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    s[i] = s[i - 1] + a[i];































































































































































































































































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      stc = i - k + 1;































































































































































































































































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        stmax = stc;































































































































































































































































        drmax = i;































































































































































































































































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  fclose( fout );































































































































































































































































  return 0;































































































































































































































































}