借鉴了下题解,以后把l=0,r=n+1;两边空出来然后循环条件写l+1>n>>m; for(i=1;i>a[i]; int l=0,r=100000001,mid; while(l + 1
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借鉴了下题解,以后把l=0,r=n+1;两边空出来然后循环条件写l+1>n>>m; for(i=1;i>a[i]; int l=0,r=100000001,mid; while(l + 1
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