0_0_18243697_5778.cpp: In function 'int solve(int)':
0_0_18243697_5778.cpp:24:13: error: 'ans' was not declared in this scope
ans+=t;
^
0_0_18243697_5778.cpp: In function 'int main()':
0_0_18243697_5778.cpp:53:20: error: 'n' was not declared in this scope
int nn=n;
^
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