Compilare: main.cpp: In function 'int main()': main.cpp:111:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("radare.in", "r", stdin); ^ main.cpp:112:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("radare.out", "w", stdout); ^ main.cpp: In function 'int solve(int, int)': main.cpp:75:30: warning: array subscript is below array bounds [-Warray-bounds] if (p < 0) return dp[u][p] = res; ~~~~~~~^