112 lines
2.1 KiB
C++
112 lines
2.1 KiB
C++
#include <bits/stdc++.h> // {{{
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// https://codeforces.com/blog/entry/96344
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#pragma GCC optimize("O2,unroll-loops")
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#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
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using namespace std;
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using i32 = int32_t;
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using u32 = uint32_t;
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using i64 = int64_t;
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using u64 = uint64_t;
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using f64 = double;
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using f128 = long double;
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template <typename T>
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constexpr T MIN = std::numeric_limits<T>::min();
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template <typename T>
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constexpr T MAX = std::numeric_limits<T>::max();
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template <typename T>
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[[nodiscard]] static T sc(auto&& x) {
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return static_cast<T>(x);
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}
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template <typename T>
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[[nodiscard]] static T sz(auto&& x) {
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return static_cast<T>(x.size());
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}
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static void NO() {
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std::cout << "NO\n";
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}
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static void YES() {
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std::cout << "YES\n";
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}
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#define all(x) (x).begin(), (x).end()
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#define rall(x) (x).rbegin(), (x).rend()
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#define ff first
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#define ss second
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#ifdef LOCAL
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#define db(...) std::print(__VA_ARGS__)
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#define dbln(...) std::println(__VA_ARGS__)
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#else
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#define db(...)
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#define dbln(...)
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#endif
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// }}}
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void solve() {
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u32 n;
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cin >> n;
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map<u32, array<i32, 3>> deltas;
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u32 day;
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string name;
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i32 delta;
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for (u32 i = 0; i < n; ++i) {
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cin >> day >> name >> delta;
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if (name[0] == 'M') {
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deltas[day][0] = delta;
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} else if (name[0] == 'E') {
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deltas[day][1] = delta;
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} else {
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deltas[day][2] = delta;
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}
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}
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u32 last_winners = 0b111;
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vector<i64> vals(3, 0);
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i64 ans = 0;
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for (auto it = deltas.begin(); it != deltas.end(); ++it) {
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for (u32 j = 0; j < 3; ++j) {
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vals[j] += it->second[j];
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}
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i64 large = *max_element(all(vals));
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u32 winners = 0b000;
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for (u32 j = 0; j < 3; ++j) {
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winners |= u32(vals[j] == large) << j;
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}
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ans += last_winners != winners;
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last_winners = winners;
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}
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cout << ans << '\n';
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}
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int main() { // {{{
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cin.tie(nullptr)->sync_with_stdio(false);
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cin.exceptions(cin.failbit);
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#define PROBLEM_NAME "measurement"
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#ifdef LOCAL
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freopen("io/" PROBLEM_NAME ".in", "r", stdin);
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freopen("io/" PROBLEM_NAME ".out", "w", stdout);
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#else
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freopen(PROBLEM_NAME ".in", "r", stdin);
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freopen(PROBLEM_NAME ".out", "w", stdout);
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#endif
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solve();
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return 0;
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}
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// }}}
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