0_0_34212129_13749.cpp: In function 'int main()':
0_0_34212129_13749.cpp:8:22: error: 'a' was not declared in this scope
while(scanf("%d%d",&a,&b)!=EOF){
^
0_0_34212129_13749.cpp:8:25: error: 'b' was not declared in this scope
while(scanf("%d%d",&a,&b)!=EOF){
^
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