0_0_25118663_29703.cpp: In function 'bool spfa()':
0_0_25118663_29703.cpp:22:2: error: 'queue' was not declared in this scope
queue<int>qu;
^
0_0_25118663_29703.cpp:22:8: error: expected primary-expression before 'int'
queue<int>qu;
^
0_0_25118663_29703.cpp:29:5: error: 'qu' was not declared in this scope
qu.push(s);
^
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