Compilare: user.cpp: In function ‘int main()’: user.cpp:14:14: warning: unused variable ‘last’ [-Wunused-variable] int cnt, last, i, j, a, b, pos; ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("towerx.in", "r", stdin); ^ user.cpp:13:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("towerx.out", "w", stdout); ^ user.cpp:16:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:21:12: warning: array subscript is above array bounds [-Warray-bounds] d[b][1] = 1; ^ user.cpp:23:26: warning: array subscript is above array bounds [-Warray-bounds] d[b][j] = d[a][j - 1] + d[b][j - 1]; ^ user.cpp:23:40: warning: array subscript is above array bounds [-Warray-bounds] d[b][j] = d[a][j - 1] + d[b][j - 1]; ^ user.cpp:23:16: warning: array subscript is above array bounds [-Warray-bounds] d[b][j] = d[a][j - 1] + d[b][j - 1]; ^ user.cpp:25:29: warning: array subscript is above array bounds [-Warray-bounds] d[b][j] -= i; ^ user.cpp:28:20: warning: array subscript is above array bounds [-Warray-bounds] nr[i] = d[b][n]; ^