paianjen.cpp: In function 'void traseu(int, int)': paianjen.cpp:24: warning: suggest explicit braces to avoid ambiguous 'else' paianjen.cpp: In function 'int main()': paianjen.cpp:88: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x paianjen.cpp:88: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x paianjen.cpp:39: warning: unused variable 'u' paianjen.cpp:39: warning: unused variable 'p' paianjen.cpp:39: warning: unused variable 'zx' paianjen.cpp:39: warning: unused variable 'zy' paianjen.cpp:39: warning: unused variable 'ii' paianjen.cpp:39: warning: unused variable 'jj'