oj.uz

Submission #26341

# Submission time Handle Problem Language Result Execution time Memory
26341 2017-06-29T08:57:08 Z kdh9949 Ili (COI17_ili) C++14
100 / 100
 3899 ms 3848 KB 
#include <bits/stdc++.h>
using namespace std;

int n, m, dp[20010];
char str[10010], ans[10010];
vector<int> e[20010], re[20010];

int can(){
	fill(dp + 1, dp + n + m + 1, 0);
	for(int i = n + m; i >= 1; i--){
		if(i > n){
			if(str[i - n] == '0') dp[i] = -1;
			else if(str[i - n] == '1'){
				for(auto &j : re[i]) if(dp[j] == -1) return 0;
				dp[i] = 1;
			}
			else{
				for(auto &j : re[i]) if(dp[j] == -1){ dp[i] = -1; break; }
			}
		}
		else{
			for(auto &j : re[i]) if(dp[j] == -1){ dp[i] = -1; break; }
		}
	}
	for(int i = n + 1; i <= n + m; i++){
		if(dp[i] == 1){
			if(dp[e[i][0]] == -1){
				if(dp[e[i][1]] == -1) return 0;
				dp[e[i][1]] = 1;
			}
			else if(dp[e[i][1]] == -1) dp[e[i][0]] = 1;
		}
		else if(!dp[i]){
			if(dp[e[i][0]] == 1 || dp[e[i][1]] == 1) dp[i] = 1;
			else if(dp[e[i][0]] == -1 && dp[e[i][1]] == -1) dp[i] = -1;
		}
		else{
			if(dp[e[i][0]] == 1 || dp[e[i][1]] == 1) return 0;
		}
	}
	return 1;
}

int main(){
	scanf("%d%d%s", &n, &m, str + 1);
	for(int i = 1, x, y; i <= m; i++){
		char a[10], b[10]; scanf("%s%s", &a, &b);
		sscanf(a + 1, "%d", &x);
		sscanf(b + 1, "%d", &y);
		if(a[0] == 'c') x += n;
		if(b[0] == 'c') y += n;
		e[n + i].push_back(x); e[n + i].push_back(y);
		re[x].push_back(n + i); re[y].push_back(n + i);
	}
	for(int i = 1; i <= m; i++){
		if(str[i] != '?'){
			ans[i] = str[i]; continue;
		}
		str[i] = '0';
		if(!can()){
			str[i] = '?';
			ans[i] = '1';
			continue;
		}
		str[i] = '1';
		if(can()) ans[i] = '?';
		else ans[i] = '0';
		str[i] = '?';
	}
	puts(ans + 1);
}

Compilation message

ili.cpp: In function 'int main()':
ili.cpp:47:42: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[10]' [-Wformat=]
   char a[10], b[10]; scanf("%s%s", &a, &b);
                                          ^
ili.cpp:47:42: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[10]' [-Wformat=]
ili.cpp:45:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%s", &n, &m, str + 1);
                                  ^
ili.cpp:47:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   char a[10], b[10]; scanf("%s%s", &a, &b);
                                           ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3056 KB Output is correct
2 Correct 0 ms 3056 KB Output is correct
3 Correct 0 ms 3056 KB Output is correct
4 Correct 0 ms 3056 KB Output is correct
5 Correct 0 ms 3056 KB Output is correct
6 Correct 0 ms 3056 KB Output is correct
7 Correct 0 ms 3056 KB Output is correct

Subtask #2
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3056 KB Output is correct
2 Correct 0 ms 3056 KB Output is correct
3 Correct 0 ms 3056 KB Output is correct
4 Correct 0 ms 3056 KB Output is correct
5 Correct 0 ms 3056 KB Output is correct
6 Correct 0 ms 3056 KB Output is correct
7 Correct 0 ms 3056 KB Output is correct
8 Correct 3 ms 3056 KB Output is correct
9 Correct 0 ms 3056 KB Output is correct
10 Correct 0 ms 3056 KB Output is correct
11 Correct 0 ms 3056 KB Output is correct
12 Correct 0 ms 3056 KB Output is correct
13 Correct 0 ms 3056 KB Output is correct
14 Correct 3 ms 3056 KB Output is correct

Subtask #3
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 3056 KB Output is correct
2 Correct 0 ms 3056 KB Output is correct
3 Correct 0 ms 3056 KB Output is correct
4 Correct 0 ms 3056 KB Output is correct
5 Correct 0 ms 3056 KB Output is correct
6 Correct 0 ms 3056 KB Output is correct
7 Correct 0 ms 3056 KB Output is correct
8 Correct 3 ms 3056 KB Output is correct
9 Correct 0 ms 3056 KB Output is correct
10 Correct 0 ms 3056 KB Output is correct
11 Correct 0 ms 3056 KB Output is correct
12 Correct 0 ms 3056 KB Output is correct
13 Correct 0 ms 3056 KB Output is correct
14 Correct 3 ms 3056 KB Output is correct
15 Correct 473 ms 3452 KB Output is correct
16 Correct 1633 ms 3452 KB Output is correct
17 Correct 1229 ms 3584 KB Output is correct
18 Correct 2696 ms 3584 KB Output is correct
19 Correct 1626 ms 3452 KB Output is correct
20 Correct 3359 ms 3716 KB Output is correct
21 Correct 3899 ms 3716 KB Output is correct
22 Correct 363 ms 3848 KB Output is correct
23 Correct 409 ms 3848 KB Output is correct
24 Correct 379 ms 3848 KB Output is correct
25 Correct 789 ms 3484 KB Output is correct
26 Correct 779 ms 3484 KB Output is correct
27 Correct 803 ms 3484 KB Output is correct
28 Correct 733 ms 3484 KB Output is correct
29 Correct 736 ms 3484 KB Output is correct
30 Correct 786 ms 3484 KB Output is correct
31 Correct 763 ms 3608 KB Output is correct
32 Correct 929 ms 3584 KB Output is correct