#include <iostream>
#include <cstdio>
#include <cassert>
#include <map>
#include <set>
int main() {
int t;
scanf("%d", &t);
for (int i = 0; i < t; ++i) {
int n, m;
std::map<int, std::set<int>> aAttacks, bAttacks;
std::map<int, std::set<int>> aAttacked, bAttacked;
std::set<int> aNotAttacked, bNotAttacked;
std::set<int> A, B;
scanf("%d %d", &n, &m);
for (int i = 0; i < n; ++i) {
A.insert(i+1);
B.insert(i+1);
aNotAttacked.insert(i+1);
bNotAttacked.insert(i+1);
}
for (int i = 0; i < m; ++i) {
int a, b;
char c;
scanf("%d %c %d", &a, &c, &b);
if (c == '<') {
bAttacks[b].insert(a);
aAttacked[a].insert(b);
aNotAttacked.erase(a);
} else {
assert(c == '>');
aAttacks[a].insert(b);
bAttacked[b].insert(a);
bNotAttacked.erase(b);
}
}
for (int i = 0; i < n - 1; ++i) {
{
while (!bAttacks.empty() && bAttacks.begin()->second.empty()) {
bAttacks.erase(bAttacks.begin());
}
const int bToRemove = !bAttacks.empty() ? bAttacks.begin()->first : (!bNotAttacked.empty() ? *bNotAttacked.begin() : *B.begin());
// std::cerr << "removing: " << bToRemove << "\n";
if (bAttacked.count(bToRemove)) {
for (int a : bAttacked[bToRemove]) {
const int numErased = aAttacks[a].erase(bToRemove);
assert(numErased == 1);
if (aAttacks[a].empty()) {
aAttacks.erase(a);
}
}
bAttacked.erase(bToRemove);
}
if (bAttacks.count(bToRemove)) {
for (int a : bAttacks[bToRemove]) {
const int numErased = aAttacked[a].erase(bToRemove);
assert(numErased == 1);
if (aAttacked[a].empty()) {
aAttacked.erase(a);
aNotAttacked.insert(a);
}
}
bAttacks.erase(bToRemove);
}
bNotAttacked.erase(bToRemove);
const int numErased = B.erase(bToRemove);
assert(numErased == 1);
}
{
while (!aAttacks.empty() && aAttacks.begin()->second.empty()) {
aAttacks.erase(aAttacks.begin());
}
const int aToRemove = !aAttacks.empty() ? aAttacks.begin()->first : (!aNotAttacked.empty() ? *aNotAttacked.begin() : *A.begin());
// std::cerr << "removing: " << aToRemove << "\n";
if (aAttacked.count(aToRemove)) {
for (int b : aAttacked[aToRemove]) {
const int numErased = bAttacks[b].erase(aToRemove);
assert(numErased == 1);
if (bAttacks[b].empty()) {
bAttacks.erase(b);
}
}
aAttacked.erase(aToRemove);
}
if (aAttacks.count(aToRemove)) {
for (int b : aAttacks[aToRemove]) {
const int numErased = bAttacked[b].erase(aToRemove);
assert(numErased == 1);
if (bAttacked[b].empty()) {
bAttacked.erase(b);
bNotAttacked.insert(b);
}
}
aAttacks.erase(aToRemove);
}
aNotAttacked.erase(aToRemove);
const int numErased = A.erase(aToRemove);
assert(numErased == 1);
}
}
assert(A.size() == 1);
assert(B.size() == 1);
if (!aAttacks.empty()) {
assert(bAttacks.empty());
// std::cerr << aAttacks.begin()->first << " -> " << aAttacks.begin()->second.size() << "\n";
printf("WYGRANA\n");
} else if (!bAttacks.empty()) {
assert(aAttacks.empty());
printf("PRZEGRANA\n");
} else {
printf("REMIS\n");
}
}
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | #include <iostream> #include <cstdio> #include <cassert> #include <map> #include <set> int main() { int t; scanf("%d", &t); for (int i = 0; i < t; ++i) { int n, m; std::map<int, std::set<int>> aAttacks, bAttacks; std::map<int, std::set<int>> aAttacked, bAttacked; std::set<int> aNotAttacked, bNotAttacked; std::set<int> A, B; scanf("%d %d", &n, &m); for (int i = 0; i < n; ++i) { A.insert(i+1); B.insert(i+1); aNotAttacked.insert(i+1); bNotAttacked.insert(i+1); } for (int i = 0; i < m; ++i) { int a, b; char c; scanf("%d %c %d", &a, &c, &b); if (c == '<') { bAttacks[b].insert(a); aAttacked[a].insert(b); aNotAttacked.erase(a); } else { assert(c == '>'); aAttacks[a].insert(b); bAttacked[b].insert(a); bNotAttacked.erase(b); } } for (int i = 0; i < n - 1; ++i) { { while (!bAttacks.empty() && bAttacks.begin()->second.empty()) { bAttacks.erase(bAttacks.begin()); } const int bToRemove = !bAttacks.empty() ? bAttacks.begin()->first : (!bNotAttacked.empty() ? *bNotAttacked.begin() : *B.begin()); // std::cerr << "removing: " << bToRemove << "\n"; if (bAttacked.count(bToRemove)) { for (int a : bAttacked[bToRemove]) { const int numErased = aAttacks[a].erase(bToRemove); assert(numErased == 1); if (aAttacks[a].empty()) { aAttacks.erase(a); } } bAttacked.erase(bToRemove); } if (bAttacks.count(bToRemove)) { for (int a : bAttacks[bToRemove]) { const int numErased = aAttacked[a].erase(bToRemove); assert(numErased == 1); if (aAttacked[a].empty()) { aAttacked.erase(a); aNotAttacked.insert(a); } } bAttacks.erase(bToRemove); } bNotAttacked.erase(bToRemove); const int numErased = B.erase(bToRemove); assert(numErased == 1); } { while (!aAttacks.empty() && aAttacks.begin()->second.empty()) { aAttacks.erase(aAttacks.begin()); } const int aToRemove = !aAttacks.empty() ? aAttacks.begin()->first : (!aNotAttacked.empty() ? *aNotAttacked.begin() : *A.begin()); // std::cerr << "removing: " << aToRemove << "\n"; if (aAttacked.count(aToRemove)) { for (int b : aAttacked[aToRemove]) { const int numErased = bAttacks[b].erase(aToRemove); assert(numErased == 1); if (bAttacks[b].empty()) { bAttacks.erase(b); } } aAttacked.erase(aToRemove); } if (aAttacks.count(aToRemove)) { for (int b : aAttacks[aToRemove]) { const int numErased = bAttacked[b].erase(aToRemove); assert(numErased == 1); if (bAttacked[b].empty()) { bAttacked.erase(b); bNotAttacked.insert(b); } } aAttacks.erase(aToRemove); } aNotAttacked.erase(aToRemove); const int numErased = A.erase(aToRemove); assert(numErased == 1); } } assert(A.size() == 1); assert(B.size() == 1); if (!aAttacks.empty()) { assert(bAttacks.empty()); // std::cerr << aAttacks.begin()->first << " -> " << aAttacks.begin()->second.size() << "\n"; printf("WYGRANA\n"); } else if (!bAttacks.empty()) { assert(aAttacks.empty()); printf("PRZEGRANA\n"); } else { printf("REMIS\n"); } } } |
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