Compilare: main.cpp: In function 'int main()': main.cpp:21:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1;j<=m;j++) ^~~ main.cpp:23:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' int ok=1; ^~~ main.cpp:10:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("panza.in","r",stdin); ^ main.cpp:11:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("panza.out","w",stdout); ^ main.cpp:12:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&m,&s,&f); ^ main.cpp:13:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=m;i++) scanf("%d",&a[i]); ^ main.cpp:14:48: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) scanf("%d%d",&x[i],&y[i]); ^