zoj 1414

<span style="font-family:Microsoft YaHei;font-size:12px;">#include<stdio.h>int main(){int n,a,b,i,j;scanf("%d",&n);while(n--){scanf("%d%d",&a,&b);if(a!=b&&(a-b)!=2)printf("No Number\n");else if(a%2==0){if(a==b||a-b==2)printf("%d\n",a+b);}else if(a%2!=0){if(a==b||a-b==2)printf("%d\n",a+b-1);}}return 0;}</span>