Submission #773686

#	Time	Username	Problem	Language	Result	Execution time	Memory
773686		gagik_2007	Remittance (JOI19_remittance)	C++17	0 / 100	25 ms	4052 KiB

remittance

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define ff first
#define ss second

ll ttt;
const ll INF=1e18;
const ll MOD=1e9+7;
const ll N=105413504+7;
ll n,m,k;
vector<int>a,b;
bool used[N];
int verjval;
const int MAXVAL=14;

int value(const vector<int>& p){
    int cur=1;
    int res=0;
    for(int x:p){
        res+=cur*x;
        cur*=MAXVAL;
    }
    return res;
}

vector<int> deval(int val){
    vector<int>ans;
    while(val!=0){
        ans.push_back(val%MAXVAL);
        val/=MAXVAL;
    }
    return ans;
}

void recurs(int val){
    if(val==verjval){
        cout<<"Yes"<<endl;
        exit(0);
    }
    if(used[val])return;
    used[val]=true;
    vector<int>p=deval(val);
    for(int i=0;i<p.size();i++){
        for(int j=0;j<p.size();j++){
            if(i!=j){
                int t1=p[i];
                int t2=p[j];
                for(int vl=1;vl<=p[i]/2;vl++){
                    p[i]-=2*vl;
                    p[j]+=vl;
                    recurs(value(p));
                    p[i]=t1;
                    p[j]=t2;
                }
            }
        }
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    freopen("output.txt","w",stdout);
    cin>>n;
    for(int i=0;i<n;i++){
        int x,y;
        cin>>x>>y;
        a.push_back(x);
        b.push_back(y);
    }
    verjval=value(b);
    recurs(value(a));
    cout<<"No"<<endl;
    return 0;
}

Compilation message (stderr)

remittance.cpp: In function 'void recurs(int)':
remittance.cpp:49:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |     for(int i=0;i<p.size();i++){
      |                 ~^~~~~~~~~
remittance.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         for(int j=0;j<p.size();j++){
      |                     ~^~~~~~~~~
remittance.cpp: In function 'int main()':
remittance.cpp:70:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |     freopen("output.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 45