public static int jumpingOnClouds(List<Integer> c) {
        int jumps = 0;
        int n =c.size()-1;
        int lastPos=0;
        for(int i = 2;i<=n;i+=2){ 
            if(c.get(i)==1){ 
                i--;
                jumps++;
            }
            else{
                jumps++;
            }
            lastPos = i;
        }
        if(lastPos==n-1){ 
            jumps++;
        }
    
        return jumps;

    }