knapsack.cpp: In function 'int main()':
knapsack.cpp:40:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | if(ind<store[i].size()){
| ~~~^~~~~~~~~~~~~~~~
knapsack.cpp:45:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | if(ind>=store[i].size())break;
| ~~~^~~~~~~~~~~~~~~~~
knapsack.cpp:10:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
10 | freopen("input.in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:11:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | freopen("output.out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:48:59: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
48 | if(dp[k]&&i+k<=s)dp[i+k]=max(dp[i+k],dp[k]+x);