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Submission #135702

# Submission time Handle Problem Language Result Execution time Memory
135702 2019-07-24T09:53:25 Z khsoo01 Plus Minus (BOI17_plusminus) C++11
100 / 100
 237 ms 15084 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll mod = 1e9+7;
ll n, m, k, tot, rc, cc, ans;
map<ll, ll> row, col;
bool rv, cv, tv;

ll two (ll A) {
	if(!A) return 1;
	ll ret = two(A/2);
	ret = ret * ret % mod;
	if(A&1) ret = ret * 2 % mod;
	return ret;
}

int main()
{
	scanf("%lld%lld%lld",&n,&m,&k);
	for(int i=1;i<=k;i++) {
		ll A, B, C;
		char T[2];
		scanf("%s%lld%lld",T,&A,&B);
		C = (T[0] == '+');
		ll X = ((A^B^C)&1)+1;
		if(row[A]) {
			if(row[A] != X) rv = true;
		} else {
			row[A] = X;
			rc++;
		}
		if(col[B]) {
			if(col[B] != X) cv = true;
		} else {
			col[B] = X;
			cc++;
		}
		if(tot) {
			if(tot != X) tv = true;
		} else tot = X;
	}
	if(!rv) ans = (ans + two(n-rc)) % mod;
	if(!cv) ans = (ans + two(m-cc)) % mod;
	if(!tv) ans = (ans + mod - 1) % mod;
	if(!k) ans = (ans + mod -1) % mod;
	printf("%lld\n",ans);
}

Compilation message

plusminus.cpp: In function 'int main()':
plusminus.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld",&n,&m,&k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
plusminus.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s%lld%lld",T,&A,&B);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 252 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 356 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 252 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 356 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 380 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 368 KB Output is correct
16 Correct 63 ms 1372 KB Output is correct
17 Correct 63 ms 1400 KB Output is correct
18 Correct 63 ms 1396 KB Output is correct
19 Correct 61 ms 1400 KB Output is correct
20 Correct 62 ms 1400 KB Output is correct

Subtask #3
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 252 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 356 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 380 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 368 KB Output is correct
16 Correct 63 ms 1372 KB Output is correct
17 Correct 63 ms 1400 KB Output is correct
18 Correct 63 ms 1396 KB Output is correct
19 Correct 61 ms 1400 KB Output is correct
20 Correct 62 ms 1400 KB Output is correct
21 Correct 168 ms 9200 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 185 ms 9092 KB Output is correct
24 Correct 162 ms 9124 KB Output is correct
25 Correct 171 ms 9160 KB Output is correct
26 Correct 210 ms 12588 KB Output is correct
27 Correct 182 ms 12544 KB Output is correct
28 Correct 218 ms 12528 KB Output is correct
29 Correct 193 ms 12672 KB Output is correct
30 Correct 237 ms 15084 KB Output is correct