0_0_15215117_27247.cpp: In function 'int main()':
0_0_15215117_27247.cpp:5:8: error: 'cin' was not declared in this scope
while(cin>>h1>>m1>>h2>>m2&&(h1!=0||h2!=0||m1!=0||m2!=0))
^
0_0_15215117_27247.cpp:48:2: error: 'cout' was not declared in this scope
cout<<number<<endl;}
^
0_0_15215117_27247.cpp:48:16: error: 'endl' was not declared in this scope
cout<<number<<endl;}
^
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