QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#499891 | #8509. Expanding STACKS! | hhhhyf | WA | 0ms | 3788kb | C++20 | 2.2kb | 2024-07-31 19:59:57 | 2024-07-31 19:59:59 |
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];
vector<int> ans(n);
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) {
ans[stk[0].top()] = 0;
stk[0].pop();
} else if (stk[1].size() && stk[1].top() == i) {
ans[stk[1].top()] = 1;
stk[1].pop();
} else {
cout << '*';
return;
}
}
}
for (int x: ans) {
cout << (x == 0 ? 'G' : 'S');
}
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t = 1;
//cin >> t;
while(t --) {
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3744kb
input:
2 +2 +1 -1 -2
output:
GG
result:
ok correct
Test #2:
score: 0
Accepted
time: 0ms
memory: 3596kb
input:
2 +1 +2 -1 -2
output:
GS
result:
ok correct
Test #3:
score: 0
Accepted
time: 0ms
memory: 3528kb
input:
3 +1 +2 +3 -1 -2 -3
output:
*
result:
ok correct
Test #4:
score: 0
Accepted
time: 0ms
memory: 3584kb
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: 0
Accepted
time: 0ms
memory: 3616kb
input:
10 +8 -8 +2 +10 -2 -10 +7 -7 +1 -1 +6 -6 +5 +3 +4 +9 -9 -4 -3 -5
output:
GGGGGGGGGS
result:
ok correct
Test #6:
score: 0
Accepted
time: 0ms
memory: 3548kb
input:
42 +26 -26 +12 +8 -12 -8 +30 +5 +22 +3 -3 +2 -30 +10 -10 -2 -22 +23 +39 -39 +17 -17 -23 +38 +24 -24 +27 +29 -29 -27 -38 -5 +37 -37 +21 +16 +28 -28 +6 +40 +14 +19 -19 -14 +11 +35 -35 -11 +4 +25 -25 -4 -40 -6 +13 +20 +1 -1 +33 +34 +7 -7 -34 +41 -41 +36 +31 -31 -36 +42 +32 -32 +15 +18 -18 -15 +9 -9 -42...
output:
GSGGSGGSGSGGGGGGSGGGGSSSGGSGSGGGGGGGGSSGGG
result:
ok correct
Test #7:
score: 0
Accepted
time: 0ms
memory: 3524kb
input:
42 +40 +18 +42 +2 +1 +21 +33 -2 +8 -33 -8 +14 -40 +34 +30 +31 -31 -30 +5 -5 +4 -34 +13 +3 -13 -3 -4 +28 -28 +17 -17 +35 +10 -10 +16 +39 +36 +37 -37 -36 -39 +25 +6 +41 -41 +20 +12 +32 -32 -25 -12 -16 -35 +38 -20 -38 -14 +15 -15 +9 +26 +23 -21 -1 +7 -23 +22 +24 -7 -24 -42 -18 -22 -26 -9 -6 +27 +29 -29...
output:
SGSGSGSGGSGGGSGSSSGGSGGGSGGSGSSGSSSSSSSGGS
result:
ok correct
Test #8:
score: 0
Accepted
time: 0ms
memory: 3612kb
input:
42 +29 +6 +7 +2 -7 -2 +23 -23 -6 -29 +19 -19 +16 +8 -16 -8 +32 -32 +3 +37 +17 -17 -37 -3 +22 -22 +18 +1 +40 +36 -1 -36 -40 -18 +9 -9 +30 +25 -25 +14 +39 +5 +20 -5 +12 -39 +28 +10 -14 +24 -24 +35 +15 -15 +41 -30 +33 -33 -41 -35 -10 -28 -12 +21 +38 -38 -21 +11 +13 -13 +4 +42 +27 +34 -34 +31 -31 +26 -2...
output:
GSGSGGGSGSSSSGGGGGGSSGGGGSSSGGSGSSSSGSGSSS
result:
ok correct
Test #9:
score: 0
Accepted
time: 0ms
memory: 3536kb
input:
100 +39 -39 +4 +71 -71 +53 -53 +46 -46 -4 +91 -91 +97 -97 +6 -6 +54 -54 +76 +35 -35 +50 +89 -89 +98 -50 -76 -98 +34 +55 +95 -34 +36 -36 +73 -95 -55 +18 +47 +20 +30 +33 -30 -33 +80 -73 +51 -51 -80 -20 +69 +77 -69 +85 +62 +84 -84 -77 +48 +49 -49 +1 -1 -48 +19 -19 -62 -85 +41 +16 -16 -41 +63 +2 -2 +65 ...
output:
SSGGGGSSGSGSGSGSGSSSGSGSGSGGGGGSSGGSSGGGSGGGGGSSSGSGGGSSSGGGGSSGSSGGSGGGGGSGGGSSGGSGSGGGGGGGGGSGGSSG
result:
ok correct
Test #10:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
100 +5 -5 +61 +48 +60 +69 +7 -7 -69 -60 +45 -45 -48 -61 +68 +4 +82 +57 -57 +12 -12 +22 +46 -46 -22 +14 +30 -30 +47 -47 -14 +94 -94 -82 +44 +27 -27 -44 +86 -86 -4 +50 +15 -15 -50 -68 +58 -58 +28 +83 -83 -28 +53 +1 +56 -56 +67 +13 +73 +87 +19 +65 +18 -18 +17 -17 +89 +62 -62 -89 +72 -72 +25 -25 -65 +98...
output:
GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
result:
ok correct
Test #11:
score: 0
Accepted
time: 0ms
memory: 3592kb
input:
100 +96 +64 -64 +41 +11 +62 +18 +25 +3 +26 -26 -3 +22 +61 +59 +73 -59 -73 -61 -62 +20 -41 -20 +46 -46 -22 +2 +10 -10 -2 -25 -18 +9 -9 -11 +60 +33 +97 +38 -38 +5 -5 -97 +81 +29 -29 -81 +92 +1 +52 -52 +87 +19 -19 +90 -90 -87 -1 -92 -33 -60 -96 +47 +6 +72 -72 +79 +98 +45 -45 +23 -23 -98 +35 -35 +27 -27...
output:
GGGGGGGGGGSGGGGGGSGSGSGGSGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGSGGGGGGGGGGGGGGGGGGGGGGGGGGG
result:
ok correct
Test #12:
score: -100
Wrong Answer
time: 0ms
memory: 3528kb
input:
171 +118 +125 +156 +76 +123 +61 +107 +15 +160 -15 -107 -160 +98 +127 -127 +152 -61 -123 +48 +139 +86 -86 +43 +129 +164 +167 +6 +9 +137 +20 +16 -20 -16 +11 +12 +133 +24 -24 -137 -133 +81 +71 +88 +142 -142 +105 -88 +93 +33 -33 -105 +85 +64 -64 +150 +5 -150 +121 -85 +1 -121 +41 -5 +53 +67 +3 -3 +72 +10...
output:
*
result:
wrong answer team and jury output doesn't agree on whether there's an assignment