oj.uz

Submission #761779

# Submission time Handle Problem Language Result Execution time Memory
761779 2023-06-20T09:24:48 Z KN200711 Foehn Phenomena (JOI17_foehn_phenomena) C++14
100 / 100
 250 ms 15664 KB 
# include <bits/stdc++.h>
# define ll long long
using namespace std;

ll A[200001];
ll ans;

ll seg[800010];

void build(int lf, int rg, int nd) {
	if(lf == rg) seg[nd] = A[lf];
	else {
		seg[nd] = 0ll;
		int mid = (lf + rg)/2;
		build(lf, mid, 2*nd+1);
		build(mid+1, rg, 2*nd+2);
	}	
}

void upd(int lf, int rg, int nd, int clf, int crg, ll ad) {
	if(clf > rg || crg < lf) return;
	if(clf <= lf && rg <= crg) seg[nd] += ad;
	else {
		int mid = (lf + rg)/2;
		upd(lf, mid, 2*nd+1, clf, crg, ad);
		upd(mid+1, rg, 2*nd+2, clf, crg, ad);
	}
}

ll qry(int lf, int rg, int nd, int pos, ll ad) {
	if(lf == rg) return seg[nd] + ad;
	else {
		int mid = (lf + rg)/2;
		if(pos <= mid) return qry(lf, mid, 2*nd+1, pos, ad + seg[nd]);
		else return qry(mid+1, rg, 2*nd+2, pos, ad + seg[nd]);
	}
}

int main() {
	int N, Q;
	ll S, T;
	scanf("%d %d %lld %lld", &N, &Q, &S, &T);
	
	for(int i=0;i<=N;i++) scanf("%lld", &A[i]);
	ans = 0ll;
	for(int i=0;i<N;i++) {
		if(A[i] < A[i + 1]) {
			ans -= S * (A[i + 1] - A[i]);
		} else {
			ans += T * (A[i] - A[i + 1]);
		}
	}
	build(0, N, 0);
	
	while(Q--) {
		int l, r;
		ll x;
		scanf("%d %d %lld", &l, &r, &x);
		
		if(l > 0) {
			ll g = qry(0, N, 0, l - 1, 0);
			ll h = qry(0, N, 0, l, 0);
			
			if(g < h) ans += S * (h - g);
			else ans -= T * (g - h);
			
			h += x;
			if(g < h) ans -= S * (h - g);
			else ans += T * (g - h);
		}
		
		if(r + 1 <= N) {
			ll g = qry(0, N, 0, r, 0);
			ll h = qry(0, N, 0, r + 1, 0);
			
			if(g < h) ans += S * (h - g);
			else ans -= T * (g - h);
			
			g += x;
			if(g < h) ans -= S * (h - g);
			else ans += T * (g - h);
		}
		
		upd(0, N, 0, l, r, x);
		printf("%lld\n", ans);
	}
}

Compilation message

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:42:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |  scanf("%d %d %lld %lld", &N, &Q, &S, &T);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:44:29: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |  for(int i=0;i<=N;i++) scanf("%lld", &A[i]);
      |                        ~~~~~^~~~~~~~~~~~~~~
foehn_phenomena.cpp:58:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |   scanf("%d %d %lld", &l, &r, &x);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 316 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 3 ms 312 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 2 ms 448 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 324 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 229 ms 12772 KB Output is correct
2 Correct 223 ms 13364 KB Output is correct
3 Correct 239 ms 13900 KB Output is correct
4 Correct 223 ms 13364 KB Output is correct
5 Correct 223 ms 14452 KB Output is correct
6 Correct 111 ms 13516 KB Output is correct
7 Correct 110 ms 13476 KB Output is correct
8 Correct 217 ms 14392 KB Output is correct
9 Correct 195 ms 14684 KB Output is correct
10 Correct 189 ms 13324 KB Output is correct
11 Correct 131 ms 13440 KB Output is correct
12 Correct 114 ms 14156 KB Output is correct
13 Correct 110 ms 14380 KB Output is correct

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 316 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 2 ms 340 KB Output is correct
7 Correct 3 ms 312 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 340 KB Output is correct
11 Correct 2 ms 448 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 324 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 229 ms 12772 KB Output is correct
23 Correct 223 ms 13364 KB Output is correct
24 Correct 239 ms 13900 KB Output is correct
25 Correct 223 ms 13364 KB Output is correct
26 Correct 223 ms 14452 KB Output is correct
27 Correct 111 ms 13516 KB Output is correct
28 Correct 110 ms 13476 KB Output is correct
29 Correct 217 ms 14392 KB Output is correct
30 Correct 195 ms 14684 KB Output is correct
31 Correct 189 ms 13324 KB Output is correct
32 Correct 131 ms 13440 KB Output is correct
33 Correct 114 ms 14156 KB Output is correct
34 Correct 110 ms 14380 KB Output is correct
35 Correct 227 ms 12908 KB Output is correct
36 Correct 224 ms 14256 KB Output is correct
37 Correct 232 ms 15108 KB Output is correct
38 Correct 250 ms 14968 KB Output is correct
39 Correct 236 ms 14892 KB Output is correct
40 Correct 225 ms 14960 KB Output is correct
41 Correct 227 ms 14800 KB Output is correct
42 Correct 231 ms 14800 KB Output is correct
43 Correct 224 ms 14156 KB Output is correct
44 Correct 228 ms 14508 KB Output is correct
45 Correct 244 ms 14540 KB Output is correct
46 Correct 222 ms 15664 KB Output is correct
47 Correct 113 ms 14256 KB Output is correct
48 Correct 129 ms 14212 KB Output is correct
49 Correct 216 ms 13156 KB Output is correct
50 Correct 136 ms 14028 KB Output is correct
51 Correct 111 ms 14424 KB Output is correct
52 Correct 129 ms 14092 KB Output is correct