Submission #489033

#	Time	Username	Problem	Language	Result	Execution time	Memory
489033		1ne	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
const int MXN = 1e12;
std::vector<int> find_subset(int l, int u, std::vector<int> arr) {
    int n = arr.size();    
    vector<bitset<MXN>>dp(n+1);
    dp[0][0]=1;
    for (int i = 0;i<n;++i){
    	dp[i+1]|=dp[i];
    	dp[i+1]|=(dp[i]<<arr[i]);
    }
    int val =-1;
    for (int i = l;i<=u;++i){
    	if (dp[n][i]){
    		val = i;
    		break;
    	}
    }
    //cout<<val<<'\n';
    vector<int>ans;
    int index = n;  
    while(index>0&&val>0){
    	if (dp[index-1][val-arr[index-1]]){
    		ans.push_back(index-1);
    		val-=arr[index-1];
    	}
    	index--;
    }
    return ans;
}

Compilation message (stderr)

molecules.cpp:4:17: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+12' to '2147483647' [-Woverflow]
    4 | const int MXN = 1e12;
      |                 ^~~~
molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:7:19: error: overflow in constant expression [-fpermissive]
    7 |     vector<bitset<MXN>>dp(n+1);
      |                   ^~~
molecules.cpp:7:19: error: overflow in constant expression [-fpermissive]
molecules.cpp:7:19: note: in template argument for type 'long unsigned int'
molecules.cpp:7:22: error: template argument 1 is invalid
    7 |     vector<bitset<MXN>>dp(n+1);
      |                      ^~
molecules.cpp:7:22: error: template argument 2 is invalid
molecules.cpp:8:7: error: invalid types 'int[int]' for array subscript
    8 |     dp[0][0]=1;
      |       ^
molecules.cpp:10:8: error: invalid types 'int[int]' for array subscript
   10 |      dp[i+1]|=dp[i];
      |        ^
molecules.cpp:10:17: error: invalid types 'int[int]' for array subscript
   10 |      dp[i+1]|=dp[i];
      |                 ^
molecules.cpp:11:8: error: invalid types 'int[int]' for array subscript
   11 |      dp[i+1]|=(dp[i]<<arr[i]);
      |        ^
molecules.cpp:11:18: error: invalid types 'int[int]' for array subscript
   11 |      dp[i+1]|=(dp[i]<<arr[i]);
      |                  ^
molecules.cpp:15:12: error: invalid types 'int[int]' for array subscript
   15 |      if (dp[n][i]){
      |            ^
molecules.cpp:24:12: error: invalid types 'int[int]' for array subscript
   24 |      if (dp[index-1][val-arr[index-1]]){
      |            ^