Compilare: main.cpp: In function 'bool memo(int, int)': main.cpp:74:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(szb[x] == 0) return dp[x][y] = 1; ~~~~~~~~~^~~ main.cpp:75:38: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(sza[y] < szb[x]) return dp[x][y] = 0; ~~~~~~~~~^~~ main.cpp:84:18: warning: suggest parentheses around assignment used as truth value [-Wparentheses] return dp[x][y] = (BipartiteMatching(ee) == szb[x]); ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sakura.in", "r", stdin); ^ main.cpp:89:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sakura.out", "w", stdout); ^ main.cpp:92:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &tc); ^ main.cpp:94:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:100:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ main.cpp:104:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ main.cpp:110:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^