Compilare: main.cpp: In function 'int main()': main.cpp:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 12 | for(int i=2;i<=n;i++) | ~^~~ main.cpp:14:22: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 14 | for(int j=0;j<=n;j++) | ~^~~ main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 24 | for(int i=2;i<=n;i++) | ~^~~ main.cpp:33:21: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 33 | if(j!=k) | ~^~~ main.cpp:35:21: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare] 35 | if(j==k) | ~^~~ main.cpp:9:28: warning: unused variable 'ans' [-Wunused-variable] 9 | unsigned long long n,k,ans=0,ans2=0; | ^~~ main.cpp:9:34: warning: unused variable 'ans2' [-Wunused-variable] 9 | unsigned long long n,k,ans=0,ans2=0; | ^~~~ main.cpp:23:16: warning: array subscript 1 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds] 23 | dp2[1][1]=1; | ~~~~~~~~^ main.cpp:34:37: warning: array subscript 1 is above array bounds of 'long long unsigned int [1][1]' [-Warray-bounds] 34 | dp2[i][j]=dp2[i-1][j-1]+dp2[i-1][j+1]; | ~~~~~~~^ main.cpp:6:31: note: while referencing 'dp2' 6 | unsigned long long dp[51][51],dp2[1][1]; | ^~~ main.cpp:34:56: warning: array subscript 2 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds] 34 | dp2[i][j]=dp2[i-1][j-1]+dp2[i-1][j+1]; | ~~~~~~~~~~~~^ main.cpp:34:28: warning: array subscript 1 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds] 34 | dp2[i][j]=dp2[i-1][j-1]+dp2[i-1][j+1]; | ~~~~~~~~^ main.cpp:36:37: warning: array subscript 1 is above array bounds of 'long long unsigned int [1][1]' [-Warray-bounds] 36 | dp2[i][j]=dp2[i-1][j-1]+1+dp2[i-1][j+1]; | ~~~~~~~^ main.cpp:6:31: note: while referencing 'dp2' 6 | unsigned long long dp[51][51],dp2[1][1]; | ^~~ main.cpp:36:58: warning: array subscript 2 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds] 36 | dp2[i][j]=dp2[i-1][j-1]+1+dp2[i-1][j+1]; | ~~~~~~~~~~~~^ main.cpp:36:28: warning: array subscript 1 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds] 36 | dp2[i][j]=dp2[i-1][j-1]+1+dp2[i-1][j+1]; | ~~~~~~~~^ main.cpp:30:36: warning: array subscript 1 is above array bounds of 'long long unsigned int [1]' [-Warray-bounds]