0_0_36198014_7678.cpp:5:1: error: expected unqualified-id before '{' token
{
^
0_0_36198014_7678.cpp:20:3: error: expected primary-expression before 'while'
while(~scanf("%d%d",&n,&m))
^
0_0_36198014_7678.cpp:20:3: error: expected '}' before 'while'
0_0_36198014_7678.cpp:20:3: error: expected ',' or ';' before 'while'
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