Compilare: main.cpp: In function 'int main()': main.cpp:17:20: warning: operation on 'm[i][j]' may be undefined [-Wsequence-point] m[i][j]=m[i][j]=1; ~~~~~~~^~~~~~~~~~ main.cpp:74:34: warning: format '%u' expects argument of type 'unsigned int', but argument 4 has type 'long long unsigned int' [-Wformat=] printf("%d %d %I64u\n",l2,l,h); ^ main.cpp:10:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("origami.in","r",stdin); ^ main.cpp:11:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("origami.out","w",stdout); ^ main.cpp:14:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ main.cpp:21:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&t,&x); ^