#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <ll,ll> pll;
typedef pair <int,int> pii;
typedef pair <int,pii> piii;
#define forr(_a,_b,_c) for(int _a = (_b); _a <= int (_c); ++_a)
#define ford(_a,_b,_c) for(int _a = (_b) + 1; _a --> int (_c);)
#define forf(_a,_b,_c) for(int _a = (_b); _a < int (_c); ++_a)
#define st first
#define nd second
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define mask(i) (1LL << (i))
#define bit(x, i) (((x) >> (i)) & 1)
#define bp __builtin_popcountll
#define file "test"
template<class X, class Y>
bool minz(X &x, const Y &y) {
if (x > y) {
x = y;
return true;
} return false;
}
template<class X, class Y>
bool maxz(X &x, const Y &y) {
if (x < y) {
x = y;
return true;
} return false;
}
const int N = 3e3 + 5;
const ll oo = (ll) 1e16;
const ll mod = 1e9 + 7; // 998244353;
int n, a[N], b[N];
ll d[N], dp[2][60001];
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
#ifdef hqm
freopen(file".inp", "r", stdin); freopen(file".out", "w", stdout);
#endif
cin >> n;
assert(n <= 3000);
memset (dp, 63, sizeof dp);
dp[0][0] = 0;
forr (i, 1, n){
cin >> a[i] >> b[i];
d[i] = d[i - 1] + a[i] - b[i];
}
forr (i, 1, n){
dp[i & 1][0] = dp[(i - 1) & 1][0];
forr (j, 1, d[n]){
dp[i & 1][j] = min (dp[i & 1][j - 1], dp[(i - 1) & 1][j]);
}
forr (j, 0, d[n]){
dp[i & 1][j] += abs(d[i] - j);
// cout << dp[i & 1][j] << " ";
}
//cout << "\n";
}
ll ans = oo;
forr (i, 0, d[n]){
minz(ans, dp[n & 1][i]);
}
cout << ans;
return 0;
}
/*
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1368 KB |
Output is correct |
2 |
Correct |
1 ms |
1372 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 6 |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1368 KB |
Output is correct |
2 |
Correct |
1 ms |
1372 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 6 |
5 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1368 KB |
Output is correct |
2 |
Correct |
1 ms |
1372 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Correct |
4 ms |
1432 KB |
Output is correct |
5 |
Correct |
11 ms |
1440 KB |
Output is correct |
6 |
Correct |
54 ms |
1372 KB |
Output is correct |
7 |
Correct |
1 ms |
1372 KB |
Output is correct |
8 |
Correct |
5 ms |
1372 KB |
Output is correct |
9 |
Correct |
5 ms |
1368 KB |
Output is correct |
10 |
Correct |
1 ms |
1372 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1368 KB |
Output is correct |
2 |
Correct |
1 ms |
1372 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Correct |
1 ms |
1372 KB |
Output is correct |
5 |
Correct |
4 ms |
1432 KB |
Output is correct |
6 |
Correct |
11 ms |
1440 KB |
Output is correct |
7 |
Correct |
54 ms |
1372 KB |
Output is correct |
8 |
Correct |
1 ms |
1372 KB |
Output is correct |
9 |
Correct |
5 ms |
1372 KB |
Output is correct |
10 |
Correct |
5 ms |
1368 KB |
Output is correct |
11 |
Correct |
1 ms |
1372 KB |
Output is correct |
12 |
Runtime error |
2 ms |
2396 KB |
Execution killed with signal 11 |
13 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1368 KB |
Output is correct |
2 |
Correct |
1 ms |
1372 KB |
Output is correct |
3 |
Correct |
1 ms |
1372 KB |
Output is correct |
4 |
Correct |
1 ms |
1372 KB |
Output is correct |
5 |
Correct |
4 ms |
1432 KB |
Output is correct |
6 |
Correct |
11 ms |
1440 KB |
Output is correct |
7 |
Correct |
54 ms |
1372 KB |
Output is correct |
8 |
Correct |
1 ms |
1372 KB |
Output is correct |
9 |
Correct |
5 ms |
1372 KB |
Output is correct |
10 |
Correct |
5 ms |
1368 KB |
Output is correct |
11 |
Runtime error |
1 ms |
604 KB |
Execution killed with signal 6 |
12 |
Halted |
0 ms |
0 KB |
- |