Submission #320315

#	Time	Username	Problem	Language	Result	Execution time	Memory
320315		tigicha	Gondola (IOI14_gondola)	C++17	60 / 100	54 ms	6756 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>
using namespace std;
const int mod=1e9+9;
long long k, l, b[100005], sum;
map <long long,long long> mp;
long long pow(long long x, long long y){
    long long s=1;
    while(y>0){
        if(y%2==1) s=(s*x)%mod;
        x=(x*x)%mod;
        y/=2;
    }
    return s;
}
int valid(int n, int a[]){
    l=-1;
    for(int i=0; i<n; i++)
    if(mp[a[i]]==1) return 0;
    else mp[a[i]]=1;
    for(int i=0; i<n; i++) 
    if(a[i]<=n){
    	l=i;
    	break;
	}
    if(l==-1) return 1;
    k=a[l];
    for(int i=l; i<n; i++)
    if(a[i]!=k && a[i]<=n) return 0;
	else{
		k++;
		if(k==n+1) k=1;
	}
    for(int i=0; i<l; i++)
    if(a[i]!=k && a[i]<=n) return 0;
	else{
		k++;
		if(k==n+1) k-=n;
	}
    return 1;
}
int replacement(int n, int a[], int ans[]){
    l=-1;
    for(int i=0; i<n; i++)
    if(a[i]<=n){
    	l=i;
    	break;
	}
    k=a[l];
    for(int i=l; i<n; i++){
        b[i]=k;
        k++;
        if(k==n+1) k-=n;
    }
    for(int i=0; i<l; i++){
        b[i]=k;
        k++;
        if(k==n+1) k=1;
    }
    vector<pair<int, int> >v;
    for(int i=0; i<n; i++)
    if(a[i]>n) v.push_back({a[i], i});
    sort(v.begin(), v.end());
    l=n;
    k=0;
    for(int i=0; i<v.size(); i++)
    while(b[v[i].second]<a[v[i].second]){
        ans[k]=b[v[i].second];
        k++;
        l++;
        b[v[i].second]=l;
    }
    return k;
}
int countReplacement(int n, int a[]){
    if(valid(n, a)==0) return 0;
    vector<int>vec;
    vec.push_back(n);
    for(int i=0; i<n; i++)
    if(a[i]>n) vec.push_back(a[i]);
    sort(vec.begin(), vec.end());
    sum=1;
    for(int i=0; i<vec.size()-1; i++){
        sum*=pow(vec.size()-i-1, vec[i+1]-vec[i]-1);
        sum%=mod;
    }
    if(vec.size()==n+1) sum=(sum*n)%mod;
    return sum;
}

Compilation message (stderr)

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:66:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for(int i=0; i<v.size(); i++)
      |                  ~^~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:83:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |     for(int i=0; i<vec.size()-1; i++){
      |                  ~^~~~~~~~~~~~~
gondola.cpp:87:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   87 |     if(vec.size()==n+1) sum=(sum*n)%mod;
      |        ~~~~~~~~~~^~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 5
• Subtask 5: 10 / 10
• Subtask 6: 20 / 20
• Subtask 7: 5 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10