| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 313852 |
2020-10-17T07:18:22 Z |
vivaan_gupta |
Vudu (COCI15_vudu) |
C++14 |
|
309 ms |
65544 KB |
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <ratio>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <climits>
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define in insert
#define vll vector<ll>
#define endl "\n"
#define pll pair<ll,ll>
#define f first
#define s second
// #define int ll
#define sz(x) (ll)x.size()
#define all(x) (x.begin(),x.end())
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
using namespace std;
const ll N =(1e6+5); // TODO : change value as per problem
const ll MOD = 1e9+7;
int cnt = 1;
ll bit[N];
int lol[N];
int lol2[N];
ll pre[N];
int a[N];
void upd(int idx){
while(idx <= cnt){
bit[idx]++;
idx += (idx&(-idx));
}
}
ll query(int idx){
ll ans =0;
while(idx >= 1){
ans += bit[idx];
idx -= (idx&(-idx));
}
return ans;
}
void solve() {
// you should actually read the stuff at the bottom
int n;
cin >> n;
FOR(i,1,n+1) cin >> a[i];
int p;
cin >> p;
pre[0] = 0;
FOR(i,1,n+1) pre[i] = pre[i-1] + a[i];
ll ans =0;
vector <pair<ll,pll>> gg;
FOR(i,1,n+1){
gg.pb(mp(pre[i] - p*i,mp(0,i)));
gg.pb(mp(pre[i-1] - p*i + p,mp(1,i)));
}
sort(gg.begin(),gg.end());
// assert(gg.size() == 2*n);
for(int i =0;i<gg.size();){
int j =i;
while(j < gg.size() && gg[j].f == gg[i].f){
if(gg[j].s.f == 0){
lol[gg[j].s.s] = cnt;
}
else{
lol2[gg[j].s.s] = cnt;
}
j++;
}
cnt++;
i = j;
}
cnt--;
// for(int i =1;i<=n;i++){
// cout << lol[i] << " ";
// cout << endl;
// }
// // assert(cnt <= 2e6);
// FOR(i,1,n+1) {
// lol[i] = M[pre[i] - p*i];
// lol2[i] = M[pre[i-1] - p*i + p];
// }
ROF(i,1,n+1){
upd(lol[i]);
int tot = n-i+1;
tot -= query(lol2[i] - 1);
ans += tot;
}
cout << ans << endl;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(NULL);
// freopen(".in","r",stdin);freopen(".out","w",stdout);
ll tt=1;
// cin >> tt;
while(tt--){
solve();
}
}
Compilation message
vudu.cpp: In function 'void solve()':
vudu.cpp:93:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
93 | for(int i =0;i<gg.size();){
| ~^~~~~~~~~~
vudu.cpp:95:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
95 | while(j < gg.size() && gg[j].f == gg[i].f){
| ~~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
1148 KB |
Output is correct |
| 2 |
Correct |
3 ms |
960 KB |
Output is correct |
| 3 |
Correct |
3 ms |
960 KB |
Output is correct |
| 4 |
Runtime error |
309 ms |
65544 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 5 |
Incorrect |
205 ms |
56132 KB |
Output isn't correct |
| 6 |
Incorrect |
304 ms |
65016 KB |
Output isn't correct |
| 7 |
Runtime error |
309 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 8 |
Incorrect |
282 ms |
58796 KB |
Output isn't correct |
| 9 |
Runtime error |
306 ms |
65536 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 10 |
Runtime error |
309 ms |
65540 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
