#include<stdio.h>

int main(void){

int N,K,A[100000];
int i,j,c;
int sum = 0;
int pre;
int max;
int ans;

scanf("%d %d", &N,&K);

for(i = 0; i < N ; i++){
  scanf("%d", &A[i]);
}

for(i=0; i < N-1; i++){
  for(j=c; j < N; j++){
    sum += A[j];

    if(K < sum){
      break;
    }
    max = sum;
    if(pre < max){
      pre = max;
    }
  }
  c++;
  sum = 0;
  ans = pre;
}


printf("%d\n",ans);

return 0;

}