Compilare: main.cpp: In function 'void task(int)': main.cpp:14:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1; j<n; ++j){ ~^~ main.cpp:16:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(dp[j+1][y]==dp[j+1][y+1] && c>a[j+1][y]) ~^~~~~~~~~~ main.cpp:4:11: warning: unused variable 'first' [-Wunused-variable] #define f first ^ main.cpp:12:9: note: in expansion of macro 'f' int f=c; ^ main.cpp: In function 'int main()': main.cpp:25:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=n; ++i){ ~^~~ main.cpp:28:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i==n) ~^~~ main.cpp:35:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=n; ++i) ~^~~ main.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=st; i<=dr; ++i) ~^~~~ main.cpp:48:5: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:51:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' return 0; ^~~~~~ main.cpp:23:9: warning: unused variable 'k' [-Wunused-variable] int k,i,j,t; ^