Compilare: main.cpp: In function 'void solve(int, int, int)': main.cpp:14:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l==n) ~^~~ main.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) ~^~ main.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pos<dr && pos+dp[l+1][c].second>=st) ~~~^~~ main.cpp:28:62: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dp[l][c].first==matrix[l][c]+dp[l+1][c+1].first && pos<dr && pos+dp[l+1][c+1].second>=st) ~~~^~~ main.cpp: In function 'int main()': main.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++)for(int j=1;j<=i;j++){fin>>x;matrix[i].push_back(x);} ~^~~ main.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++)dp[n].push_back({matrix[n][i],1}); ~^~