Submission #1002000

#	Time	Username	Problem	Language	Result	Execution time	Memory
1002000		codexistent	Gondola (IOI14_gondola)	C++14	30 / 100	6 ms	1116 KiB

gondola

#include <bits/stdc++.h>
#include <gondola.h>
using namespace std;
#define FOR(i, a, b) for(int i = a; i <= b; i++)
 
int diff(int n, int a, int b){
    if(b >= a) return b - a;
    else return (n - a) + b;
}
 
int valid(int n, int inputSeq[]){
    pair<int, int> prev = make_pair(-1, 0);
    set<int> s;
    FOR(i, 0, n - 1){
        if(inputSeq[i] <= n){
            if(prev.first == -1){
                prev = make_pair(i, inputSeq[i]);
            }else{
                if((((prev.second + diff(n, prev.first, i)) % n) == 0 ? n : ((prev.second + diff(n, prev.first, i)) % n)) != inputSeq[i]) return 0;
                prev = make_pair(i, inputSeq[i]);
            }
        }else{
            if(s.find(inputSeq[i]) != s.end()) return 0;
            s.insert(inputSeq[i]);
        }
    }
 
    return 1;
}
 
int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    int idx = -1, mx = -1;
    vector<pair<int, int> > v;
    FOR(i, 0, n - 1){
        if(gondolaSeq[i] <= n){
            idx = gondolaSeq[i] - i;
            if(idx <= 0) idx += n;
        }else{
            v.push_back(make_pair(gondolaSeq[i], i));
        }
        mx = max(mx, gondolaSeq[i]);
    }
    sort(v.begin(), v.end());
 
    if(idx == -1) idx = 1;
 
    set<int> s;
    FOR(i, 0, (int)(v.size() - 1)) s.insert(v[i].first), replacementSeq[i] = ((idx + v[i].second) % n == 0) ? n : ((idx + v[i].second) % n);
 
    int i2 = v.size(), k = -1;
    FOR(i, n + 1, mx) {
        if(s.find(i) == s.end()) {
            if(k == -1) k = i;
            else {
                replacementSeq[i2] = k;
                k = i, i2++;
            }
        }
    }
 
    return i2;
}
 
int countReplacement(int n, int inputSeq[]){
    return 1;
}

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