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View Compilation Error

0_0_38478186_18122.cpp: In function 'int spfa(int, std::vector<std::vector<std::pair<int, int> > >)':
0_0_38478186_18122.cpp:24:19: error: expected unqualified-id before '[' token
         for (auto [v, w] : G[u]) {
                   ^
0_0_38478186_18122.cpp:24:19: error: expected ';' before '[' token
0_0_38478186_18122.cpp:24:20: error: 'v' was not declared in this scope
         for (auto [v, w] : G[u]) {
                    ^
0_0_38478186_18122.cpp:24:23: error: 'w' was not declared in this scope
         for (auto [v, w] : G[u]) {
                       ^
0_0_38478186_18122.cpp: In lambda function:
0_0_38478186_18122.cpp:24:26: error: expected '{' before ':' token
         for (auto [v, w] : G[u]) {
                          ^
0_0_38478186_18122.cpp: In function 'int spfa(int, std::vector<std::vector<std::pair<int, int> > >)':
0_0_38478186_18122.cpp:24:26: error: expected ';' before ':' token
0_0_38478186_18122.cpp:24:26: error: expected primary-expression before ':' token
0_0_38478186_18122.cpp:24:26: error: expected ')' before ':' token
0_0_38478186_18122.cpp:24:26: error: expected primary-expression before ':' token


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