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View Compilation Error

0_0_38507278_28685.cpp: In function 'void solve()':
0_0_38507278_28685.cpp:55:15: error: expected unqualified-id before '[' token
     for(auto &[x, y] : a) cin >> x >> y;
               ^
0_0_38507278_28685.cpp:55:15: error: expected ';' before '[' token
0_0_38507278_28685.cpp:24:11: error: 'first' was not declared in this scope
 #define x first
           ^
0_0_38507278_28685.cpp:55:16: note: in expansion of macro 'x'
     for(auto &[x, y] : a) cin >> x >> y;
                ^
0_0_38507278_28685.cpp:25:11: error: 'second' was not declared in this scope
 #define y second
           ^
0_0_38507278_28685.cpp:55:19: note: in expansion of macro 'y'
     for(auto &[x, y] : a) cin >> x >> y;
                   ^
0_0_38507278_28685.cpp: In lambda function:
0_0_38507278_28685.cpp:55:22: error: expected '{' before ':' token
     for(auto &[x, y] : a) cin >> x >> y;
                      ^
0_0_38507278_28685.cpp: In function 'void solve()':
0_0_38507278_28685.cpp:55:22: error: expected ';' before ':' token
0_0_38507278_28685.cpp:55:22: error: expected primary-expression before ':' token
0_0_38507278_28685.cpp:55:22: error: expected ')' before ':' token
0_0_38507278_28685.cpp:55:22: error: expected primary-expression before ':' token


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