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Submission #428464

# Submission time Handle Problem Language Result Execution time Memory
428464 2021-06-15T12:04:21 Z Kevin_Zhang_TW Aliens (IOI16_aliens) C++17
4 / 100
 2000 ms 6220 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif

const int MAX_N = 300010;
const ll inf = 1ll << 55;

#include "aliens.h"

ll sq(ll v) { return v * v; }

long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
	for (int i = 0;i < n;++i) {
		if (r[i] > c[i]) swap(r[i], c[i]);
	}

	vector<int> allc(c); allc.pb(-1); sort(AI(allc)), allc.erase(unique(AI(allc)), end(allc));

	auto get_pos = [&](int c) -> int { 
		return lower_bound(AI(allc), c) - begin(allc);
	};

	int g = allc.size();

	vector<vector<ll>> dp(g, vector<ll>(k + 1, inf)), osz(g, vector<ll>(k + 1, 0));

	fill(AI(dp[0]), 0);

	vector<vector<ll>> segmn(g, vector<ll>(g, inf));

	vector<ll> omn(g, inf);

	for (int i = 0;i < n;++i) {
		int j = get_pos(c[i]); 
		chmin(omn[j], (ll)r[i]);
	}
		
	for (int i = 0;i < g;++i) {
		segmn[i][i] = omn[i];
		for (int j = i+1;j < g;++j) 
			segmn[i][j] = min(omn[j], segmn[i][j-1]);
	}

	auto get_mn = [&](int ql, int qr) {
		return segmn[ get_pos(ql) ][ get_pos(qr) ];
//		ll ret = inf;
//		for (int i = 0;i < n;++i) {
//			if (ql <= c[i] && c[i] <= qr)
//				chmin(ret, (ll)r[i]);
//		}
//		assert(ret < inf);
//		return ret;
	};

	debug(AI(allc));
	for (int i = 1;i < g;++i) {
		for (int j = 1;j <= k;++j) {
			for (int l = 0;l < i;++l) {
				ll mnc = get_mn(allc[l]+1, allc[i]);
				ll wid = allc[i] - mnc + 1;
				ll rep = max<ll>(0, allc[l] - mnc + 1);
				if (rep > osz[l][j-1]) continue;
				if (chmin(dp[i][j], dp[l][j-1] + sq(wid) - sq(rep)))
					osz[i][j] = wid;
			}
		}
	}

	debug(AI(dp[g-1]));
	return dp[g-1][k];
}

Compilation message

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:15:20: warning: statement has no effect [-Wunused-value]
   15 | #define debug(...) 0
      |                    ^
aliens.cpp:68:2: note: in expansion of macro 'debug'
   68 |  debug(AI(allc));
      |  ^~~~~
aliens.cpp:15:20: warning: statement has no effect [-Wunused-value]
   15 | #define debug(...) 0
      |                    ^
aliens.cpp:82:2: note: in expansion of macro 'debug'
   82 |  debug(AI(dp[g-1]));
      |  ^~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Correct 1 ms 204 KB Correct answer: answer = 52
6 Correct 1 ms 204 KB Correct answer: answer = 210
7 Correct 1 ms 204 KB Correct answer: answer = 88
8 Correct 1 ms 204 KB Correct answer: answer = 7696
9 Correct 1 ms 204 KB Correct answer: answer = 1
10 Correct 1 ms 204 KB Correct answer: answer = 2374
11 Correct 2 ms 332 KB Correct answer: answer = 9502
12 Correct 1 ms 204 KB Correct answer: answer = 49
13 Correct 2 ms 332 KB Correct answer: answer = 151
14 Correct 2 ms 332 KB Correct answer: answer = 7550
15 Correct 2 ms 236 KB Correct answer: answer = 7220
16 Correct 2 ms 332 KB Correct answer: answer = 7550
17 Correct 1 ms 204 KB Correct answer: answer = 10000
18 Correct 1 ms 332 KB Correct answer: answer = 10000
19 Correct 2 ms 332 KB Correct answer: answer = 624
20 Correct 1 ms 204 KB Correct answer: answer = 10000

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 1
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 1
4 Correct 1 ms 204 KB Correct answer: answer = 5
5 Correct 1 ms 204 KB Correct answer: answer = 41
6 Correct 1 ms 280 KB Correct answer: answer = 71923
7 Correct 9 ms 588 KB Correct answer: answer = 77137
8 Correct 670 ms 3020 KB Correct answer: answer = 764
9 Correct 10 ms 2252 KB Correct answer: answer = 250000
10 Execution timed out 2067 ms 6220 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Correct 1 ms 204 KB Correct answer: answer = 52
6 Correct 1 ms 204 KB Correct answer: answer = 210
7 Correct 1 ms 204 KB Correct answer: answer = 88
8 Correct 1 ms 204 KB Correct answer: answer = 7696
9 Correct 1 ms 204 KB Correct answer: answer = 1
10 Correct 1 ms 204 KB Correct answer: answer = 2374
11 Correct 2 ms 332 KB Correct answer: answer = 9502
12 Correct 1 ms 204 KB Correct answer: answer = 49
13 Correct 2 ms 332 KB Correct answer: answer = 151
14 Correct 2 ms 332 KB Correct answer: answer = 7550
15 Correct 2 ms 236 KB Correct answer: answer = 7220
16 Correct 2 ms 332 KB Correct answer: answer = 7550
17 Correct 1 ms 204 KB Correct answer: answer = 10000
18 Correct 1 ms 332 KB Correct answer: answer = 10000
19 Correct 2 ms 332 KB Correct answer: answer = 624
20 Correct 1 ms 204 KB Correct answer: answer = 10000
21 Correct 1 ms 204 KB Correct answer: answer = 1
22 Correct 1 ms 204 KB Correct answer: answer = 4
23 Correct 1 ms 204 KB Correct answer: answer = 1
24 Correct 1 ms 204 KB Correct answer: answer = 5
25 Correct 1 ms 204 KB Correct answer: answer = 41
26 Correct 1 ms 280 KB Correct answer: answer = 71923
27 Correct 9 ms 588 KB Correct answer: answer = 77137
28 Correct 670 ms 3020 KB Correct answer: answer = 764
29 Correct 10 ms 2252 KB Correct answer: answer = 250000
30 Execution timed out 2067 ms 6220 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Correct 1 ms 204 KB Correct answer: answer = 52
6 Correct 1 ms 204 KB Correct answer: answer = 210
7 Correct 1 ms 204 KB Correct answer: answer = 88
8 Correct 1 ms 204 KB Correct answer: answer = 7696
9 Correct 1 ms 204 KB Correct answer: answer = 1
10 Correct 1 ms 204 KB Correct answer: answer = 2374
11 Correct 2 ms 332 KB Correct answer: answer = 9502
12 Correct 1 ms 204 KB Correct answer: answer = 49
13 Correct 2 ms 332 KB Correct answer: answer = 151
14 Correct 2 ms 332 KB Correct answer: answer = 7550
15 Correct 2 ms 236 KB Correct answer: answer = 7220
16 Correct 2 ms 332 KB Correct answer: answer = 7550
17 Correct 1 ms 204 KB Correct answer: answer = 10000
18 Correct 1 ms 332 KB Correct answer: answer = 10000
19 Correct 2 ms 332 KB Correct answer: answer = 624
20 Correct 1 ms 204 KB Correct answer: answer = 10000
21 Correct 1 ms 204 KB Correct answer: answer = 1
22 Correct 1 ms 204 KB Correct answer: answer = 4
23 Correct 1 ms 204 KB Correct answer: answer = 1
24 Correct 1 ms 204 KB Correct answer: answer = 5
25 Correct 1 ms 204 KB Correct answer: answer = 41
26 Correct 1 ms 280 KB Correct answer: answer = 71923
27 Correct 9 ms 588 KB Correct answer: answer = 77137
28 Correct 670 ms 3020 KB Correct answer: answer = 764
29 Correct 10 ms 2252 KB Correct answer: answer = 250000
30 Execution timed out 2067 ms 6220 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Correct 1 ms 204 KB Correct answer: answer = 52
6 Correct 1 ms 204 KB Correct answer: answer = 210
7 Correct 1 ms 204 KB Correct answer: answer = 88
8 Correct 1 ms 204 KB Correct answer: answer = 7696
9 Correct 1 ms 204 KB Correct answer: answer = 1
10 Correct 1 ms 204 KB Correct answer: answer = 2374
11 Correct 2 ms 332 KB Correct answer: answer = 9502
12 Correct 1 ms 204 KB Correct answer: answer = 49
13 Correct 2 ms 332 KB Correct answer: answer = 151
14 Correct 2 ms 332 KB Correct answer: answer = 7550
15 Correct 2 ms 236 KB Correct answer: answer = 7220
16 Correct 2 ms 332 KB Correct answer: answer = 7550
17 Correct 1 ms 204 KB Correct answer: answer = 10000
18 Correct 1 ms 332 KB Correct answer: answer = 10000
19 Correct 2 ms 332 KB Correct answer: answer = 624
20 Correct 1 ms 204 KB Correct answer: answer = 10000
21 Correct 1 ms 204 KB Correct answer: answer = 1
22 Correct 1 ms 204 KB Correct answer: answer = 4
23 Correct 1 ms 204 KB Correct answer: answer = 1
24 Correct 1 ms 204 KB Correct answer: answer = 5
25 Correct 1 ms 204 KB Correct answer: answer = 41
26 Correct 1 ms 280 KB Correct answer: answer = 71923
27 Correct 9 ms 588 KB Correct answer: answer = 77137
28 Correct 670 ms 3020 KB Correct answer: answer = 764
29 Correct 10 ms 2252 KB Correct answer: answer = 250000
30 Execution timed out 2067 ms 6220 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #6
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Correct 1 ms 204 KB Correct answer: answer = 52
6 Correct 1 ms 204 KB Correct answer: answer = 210
7 Correct 1 ms 204 KB Correct answer: answer = 88
8 Correct 1 ms 204 KB Correct answer: answer = 7696
9 Correct 1 ms 204 KB Correct answer: answer = 1
10 Correct 1 ms 204 KB Correct answer: answer = 2374
11 Correct 2 ms 332 KB Correct answer: answer = 9502
12 Correct 1 ms 204 KB Correct answer: answer = 49
13 Correct 2 ms 332 KB Correct answer: answer = 151
14 Correct 2 ms 332 KB Correct answer: answer = 7550
15 Correct 2 ms 236 KB Correct answer: answer = 7220
16 Correct 2 ms 332 KB Correct answer: answer = 7550
17 Correct 1 ms 204 KB Correct answer: answer = 10000
18 Correct 1 ms 332 KB Correct answer: answer = 10000
19 Correct 2 ms 332 KB Correct answer: answer = 624
20 Correct 1 ms 204 KB Correct answer: answer = 10000
21 Correct 1 ms 204 KB Correct answer: answer = 1
22 Correct 1 ms 204 KB Correct answer: answer = 4
23 Correct 1 ms 204 KB Correct answer: answer = 1
24 Correct 1 ms 204 KB Correct answer: answer = 5
25 Correct 1 ms 204 KB Correct answer: answer = 41
26 Correct 1 ms 280 KB Correct answer: answer = 71923
27 Correct 9 ms 588 KB Correct answer: answer = 77137
28 Correct 670 ms 3020 KB Correct answer: answer = 764
29 Correct 10 ms 2252 KB Correct answer: answer = 250000
30 Execution timed out 2067 ms 6220 KB Time limit exceeded
31 Halted 0 ms 0 KB -