Submission #706035

#	Time	Username	Problem	Language	Result	Execution time	Memory
706035		Boomyday	Bootfall (IZhO17_bootfall)	C++14	0 / 100	38 ms	312 KiB

bootfall

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using db = double;
using str = string; // yay python!

using ii = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;

using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>;
using vs = vector<str>;
using vii = vector<ii>;
using vpl = vector<pl>;
using vpd = vector<pd>;

#define tcT template<class T
#define tcTU tcT, class U

tcT> using V = vector<T>;
tcT, size_t SZ> using AR = array<T,SZ>;
tcT> using PR = pair<T,T>;

// pairs
#define mp make_pair
#define f first
#define s second



#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define len(x) int((x).size())
#define bg(x) begin(x)
#define all(x) bg(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sor(x) sort(all(x))
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pb push_back
#define eb emplace_back
#define pf push_front

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5;
const ll INF = 1e18; // not too close to LLONG_MAX
const ld PI = acos((ld)-1);
const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1}; // for every grid problem!!


vi vals;

bool is_solvable(){
    int sm = 0;
    trav(i, vals) sm += i;
    //cout << sm << endl;
    if(sm%2) return 0;
    
    sm/=2;
    bool dp[vals.size()+1][sm+1]; // PLAYER, SUM
    
    FOR(i, 0, vals.size()+1) dp[i][0] = true;
    FOR(i,1, sm+1) dp[0][i] = 0;

    FOR(player, 1, vals.size()+1){
        FOR(score,1, sm+1){
            dp[player][score] = dp[player-1][score];
            if(score-vals[player-1]>=0)
            dp[player][score] = (dp[player][score] || dp[player-1][score-vals[player-1]]);
            //cout << player << " " << score << " " << dp[player][score] << endl;
        }
    }
    return dp[vals.size()][sm];
}

int main(){
    int N;
    cin >> N;
    vals.resize(N);
    vi nums(N); 
    //vi st;
    F0R(i, nums.size()) cin >> nums[i];

    vi myNums;
    FOR(i, 1, 900) myNums.pb(i);
    F0R(i, N) vals[i] = nums[i];
    if (!is_solvable()){
        cout << 0;
        return 0;
    }
    F0R(round, N){
        vi myNewNums;
        F0R(i, N) vals[i] = nums[i];
        trav(num, myNums){
            vals[round] = num;
            if(is_solvable()){
                myNewNums.pb(num);
            }
        }
        myNums = myNewNums;
    }
    cout << myNums.size() << endl;
    trav(i, myNums) cout << i << " ";
    cout <<endl;
    
    
    


}

Compilation message (stderr)

bootfall.cpp: In function 'bool is_solvable()':
bootfall.cpp:37:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 | #define FOR(i,a,b) for (int i = (a); i < (b); ++i)
      |                                        ^
bootfall.cpp:74:5: note: in expansion of macro 'FOR'
   74 |     FOR(i, 0, vals.size()+1) dp[i][0] = true;
      |     ^~~
bootfall.cpp:37:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 | #define FOR(i,a,b) for (int i = (a); i < (b); ++i)
      |                                        ^
bootfall.cpp:77:5: note: in expansion of macro 'FOR'
   77 |     FOR(player, 1, vals.size()+1){
      |     ^~~
bootfall.cpp: In function 'int main()':
bootfall.cpp:37:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 | #define FOR(i,a,b) for (int i = (a); i < (b); ++i)
      |                                        ^
bootfall.cpp:38:18: note: in expansion of macro 'FOR'
   38 | #define F0R(i,a) FOR(i,0,a)
      |                  ^~~
bootfall.cpp:94:5: note: in expansion of macro 'F0R'
   94 |     F0R(i, nums.size()) cin >> nums[i];
      |     ^~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 21
• Subtask 6: 0 / 35