int l = 0, r = 0; // cout << n << " " << now << "\n";
	while(1){
		l++;
		while(card[r + 1].c == card[l].c and card[r + 1].v < card[l].v + n + now and r + 1 <= n) r++;
		MAX = max(MAX, r - l + 1);
		if(r == n) break; 	
	}

int j=1;
	for(int i=0;i<=n;i++){
		while(j<=n&&card[j].c==card[i].c&&card[j].v-card[i].v<=n+now){
			j++;
		}
		j--;
		MAX=max(MAX,j-i+1);
	}

不是很懂，为什么前一个100分后一个15分，感觉写的没啥区别啊