Submission #126785

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
126785	2019-07-08T11:59:56 Z	losmi247	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KB

molecules

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair <int,int> p;
const int N = 2e5+45;

int n,a[N];
p go[105][10002];
p dp[105][10002];
vector <int> sol;

int[] find_subset(int l,int u,int[] w){
    n = w.size();
    for(int i = 0; i < n; i++){
        a[i+1] = w[i];
    }
    dp[0][0] = p(1,0);
    for(int i = 1; i <= n; i++){
        dp[i][0] = p(1,0);
        for(int j = 1; j <= 30; j++){
            if(dp[i-1][j].first){
                dp[i][j] = p(1,0);
                go[i][j] = p(i-1,j);
            }
            if(j >= a[i] && dp[i-1][j-a[i]].first){
                dp[i][j] = p(1,1);
                go[i][j] = p(i-1,j-a[i]);
            }
            //cout << i << " " << j << " " << dp[i][j].first << endl;
        }
    }
    p poc = p(0,0);
    for(int j = l; j <= u; j++){
        if(dp[n][j].first){
            poc = p(n,j);
            break;
        }
    }
    while(poc.first){
        if(dp[poc.first][poc.second].second){
            sol.push_back(poc.first-1);
        }
        poc = go[poc.first][poc.second];
    }
    return sol;
}

/*int main(){
    vector <int> v = find_subset(15, 17, {6, 8, 8, 7});
    for(auto f : v){
        cout << f << " ";
    }
    cout << endl;
}*/

Compilation message

molecules.cpp:12:4: warning: decomposition declaration only available with -std=c++1z or -std=gnu++1z
 int[] find_subset(int l,int u,int[] w){
    ^
molecules.cpp:12:4: error: decomposition declaration cannot be declared with type 'int'
 int[] find_subset(int l,int u,int[] w){
    ^~
molecules.cpp:12:4: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
molecules.cpp:12:4: error: empty decomposition declaration
molecules.cpp:12:7: error: expected initializer before 'find_subset'
 int[] find_subset(int l,int u,int[] w){
       ^~~~~~~~~~~