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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#499882 | #8509. Expanding STACKS! | hhhhyf | WA | 0ms | 3592kb | C++20 | 2.1kb | 2024-07-31 19:55:18 | 2024-07-31 19:55:18 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define all(a) a.begin(), a.end()
void print() { cout << '\n'; }
template <typename T, typename...Args>
void print(T t, Args...args) { cout << t << ' '; print(args...); }
using ll = long long;
const int N = 1e6 + 1, inf = 1e9;
int dir[4][2] = {
{1, 0}, {0, 1}, {-1, 0}, {0, -1}
};
template <typename T> bool chmax(T &x, T y) { if (y > x) { x = y; return true; } return false; }
template <typename T> bool chmin(T &x, T y) { if (y < x) { x = y; return true; } return false; }
template <typename T = int>
vector<T> readVector(int n) {
vector<T> a(n);
for(T &x: a) cin >> x;
return a;
}
void solve () {
int n;
cin >> n;
vector<array<int, 2>> a(2 * n);
vector<int> pos(n);
for (int i = 0; i < 2 * n; i ++) {
char c;
int x;
cin >> c >> x;
x --;
if (c == '+') {
a[i] = {0, x};
} else {
a[i] = {1, x};
pos[x] = i;
}
}
stack<int> stk[2];
string s;
for (auto& [t, i]: a) {
if (t == 0) {
if (stk[0].size() && pos[i] < pos[stk[0].top()]) {
stk[0].push(i);
} else if (stk[1].size() && pos[i] < pos[stk[1].top()]) {
stk[1].push(i);
} else if (stk[0].empty()) {
stk[0].push(i);
} else if (stk[1].empty()) {
stk[1].push(i);
} else {
cout << '*';
return;
}
} else {
if (stk[0].size() && stk[0].top() == i) {
stk[0].pop();
s += 'G';
} else if (stk[1].size() && stk[1].top() == i) {
stk[1].pop();
s += 'S';
} else {
cout << '*';
return;
}
}
}
cout << s;
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
//cin >> t;
while(t --) {
solve();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3592kb
input:
2 +2 +1 -1 -2
output:
GG
result:
ok correct
Test #2:
score: 0
Accepted
time: 0ms
memory: 3532kb
input:
2 +1 +2 -1 -2
output:
GS
result:
ok correct
Test #3:
score: 0
Accepted
time: 0ms
memory: 3532kb
input:
3 +1 +2 +3 -1 -2 -3
output:
*
result:
ok correct
Test #4:
score: 0
Accepted
time: 0ms
memory: 3528kb
input:
10 +3 -3 +4 -4 +6 +2 -2 -6 +7 -7 +5 -5 +10 +1 +9 +8 -8 -9 -1 -10
output:
GGGGGGGGGG
result:
ok correct
Test #5:
score: -100
Wrong Answer
time: 0ms
memory: 3592kb
input:
10 +8 -8 +2 +10 -2 -10 +7 -7 +1 -1 +6 -6 +5 +3 +4 +9 -9 -4 -3 -5
output:
GGSGGGGGGG
result:
wrong answer client leaving is not the top of its stack