Compilare: main.cpp: In function 'int main()': main.cpp:6:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("intersect.in","r",stdin); ^ main.cpp:7:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("intersect.out","w",stdout); ^ main.cpp:9:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ main.cpp:23:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&m,&n); ^ main.cpp:11:15: warning: iteration 99 invokes undefined behavior [-Waggressive-loop-optimizations] dp[i][i*i]=1; ~~~~~~~~~~^~ main.cpp:10:14: note: within this loop for(i=1;i<=100;i++) ~^~~~~