Compilare: main.cpp: In function 'int main()': main.cpp:15:21: warning: operation on 'y' may be undefined [-Wsequence-point] a[x][y] = x = y = score[0] = ans = 1; ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:15:17: warning: operation on 'x' may be undefined [-Wsequence-point] a[x][y] = x = y = score[0] = ans = 1; ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:12:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aiacusarpe.in", "r", stdin); ^ main.cpp:13:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("aiacusarpe.out", "w", stdout); ^ main.cpp:15:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] a[x][y] = x = y = score[0] = ans = 1; ^