bridz.cpp: In function 'void Read()':
bridz.cpp:12:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
12 | #define FOR(i, a, b, c) for (int i=a; i<=b; i+=c)
......
26 | FOR(i, 0, str.length()-1, 1) {
| ~~~~~~~~~~~~~~~~~~~~
bridz.cpp:26:9: note: in expansion of macro 'FOR'
26 | FOR(i, 0, str.length()-1, 1) {
| ^~~
bridz.cpp: In function 'int main()':
bridz.cpp:42:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
42 | freopen (task".inp", "r", stdin);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bridz.cpp:43:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
43 | freopen (task".out", "w", stdout);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~