Compilare: user.cpp: In function ‘void barare(nod, int)’: user.cpp:61:47: warning: operation on ‘m1[(((int)x) + (dx * d))][(((int)y) - (dy * d))]’ may be undefined [-Wsequence-point] m1[x+dx*d][y-dy*d]=m1[x+dx*d][y-dy*d]=val; ^ user.cpp: In function ‘void solve1()’: user.cpp:77:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(m1[i][j]==-1) ^ user.cpp: In function ‘int main()’: user.cpp:144:21: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short int*’ [-Wformat=] scanf("%d\n", &n); ^ user.cpp:153:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<k; i++) ^ user.cpp:155:32: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short int*’ [-Wformat=] scanf("\n%d %d", &x, &y); ^ user.cpp:155:32: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘short int*’ [-Wformat=] user.cpp:142:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ai.in","r",stdin); ^ user.cpp:143:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ai.out","w",stdout); ^ user.cpp:144:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:145:113: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d %d %d %d %d\n", &t.x, &t.y, &s1.x, &s1.y, &s2.x, &s2.y, &r1.x, &r1.y, &r2.x, &r2.y); ^ user.cpp:151:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ user.cpp:155:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%d %d", &x, &y); ^